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New Scale Reveals How Culture Shapes What We Call Child Abuse

11 October 2026 at 09:09

Where is the line between firm discipline and child abuse? For millions of families in the United States, the answer depends on where they grew up, what their parents did, and how their culture defines good parenting. A new study published in the Journal of Child and Family Studies tackles this thorny question with an ambitious goal: building a scientific instrument that can measure how people from different backgrounds judge parenting practices that are accepted in some communities but condemned in others. The Parenting Practices and Discipline Scale, or PPDS, developed by Kevin Ortiz Diaz, Maureen C. Kenny, and Helia Baez at Florida International University, is one of the first tools designed specifically to capture culturally situated discipline practices that existing measures simply ignore.

The stakes are enormous. Child abuse is recognized as a global health issue, and in the United States it occurs at what researchers describe as epidemic proportions. Federal data show 546,159 victims of child abuse and neglect in 2023 alone, and the vast majority of these cases, roughly 89 percent, are committed by one or both parents. Children from minority groups are often the most affected, with Black or African American children among the most likely to experience abuse, second only to American Indian or Alaska Native children. Yet the definitions of what constitutes abuse vary dramatically across countries and cultures, creating a legal and ethical minefield for immigrant families who may not realize that practices considered normal at home are illegal in their new country.

The problem is particularly acute for Hispanic families, who make up 19 percent of the American population and represent the largest share of recent immigrants. Hispanic culture is far from monolithic, encompassing communities from South and Central America and the Caribbean with distinct traditions, but certain common threads run through the research. The concept of familismo, a cultural orientation and sense of obligation to family, has been linked to greater parental warmth in some studies. At the same time, physical violence as a disciplinary method remains common in many Hispanic cultures, and the chances that such behaviors are carried over by families immigrating to the United States are high. The result is a potential collision between generations of cultural practice and a legal system, anchored by the Child Abuse Prevention and Treatment Act of 1974, that defines abuse in terms of serious physical or emotional harm.

What makes the new study distinctive is its grounding in intersectionality theory, a framework rooted in feminist scholarship that examines how multiple categories of identity, such as race, ethnicity, gender, and nativity, interact to shape experience. Rather than treating demographic characteristics as independent variables, the researchers designed their analyses to test whether these dimensions jointly predict how individuals classify discipline practices as culturally acceptable or abusive. The framework has practical urgency: racial and ethnic disparities exist in both the reporting and substantiation of child maltreatment, and current child protection policies can disproportionately affect women of color who use social services and face heightened surveillance and risk of reports to child protective services.

The scale itself emerged from a careful two-stage piloting process. First, four experienced mental health clinicians specializing in child abuse, with 10 to 20 years of experience each, reviewed a draft pool of 54 items describing parenting behaviors and case vignettes. Then ten first-generation Hispanic immigrants from a range of nationalities, including Puerto Rican, Cuban, Colombian, Mexican, Dominican, and Nicaraguan participants, examined the refined items and identified which behaviors they would associate with parents in their own cultures and whether they would label those behaviors abusive or acceptable. Consensus required agreement from at least 70 percent of the pilot group. Eighteen items survived, ten identified as culturally acceptable behaviors such as yelling, using the chancla, the slipper famously wielded in many Latino households, or letting a child sleep with parents, and eight identified as abusive behaviors such as spanking, leaving a child alone in a car, or forcing a child to bathe with an adult.

The main study recruited 1,477 undergraduates at a large Hispanic-Serving Institution in Miami, ultimately yielding an analytic sample of 1,089 participants after exclusions for failed attention checks, missing data, and groups too small for meaningful analysis. The final sample was 72.2 percent Hispanic, 16.3 percent non-Hispanic Black, and 11.6 percent non-Hispanic White, nearly 70 percent U.S.-born, and predominantly female at 88.8 percent. Participants rated each of the 18 behaviors on a three-point scale: not abusive, inappropriate but not abusive, or abusive. The choice of a college population was deliberate, since emerging adults are on the cusp of parenthood, attitudes at this life stage predict later parenting intentions, and parenting practices tend to be transmitted intergenerationally.

Psychometrically, the study unfolded in two parts. Study 1 established the scale’s initial properties using exploratory factor analysis with principal axis factoring and oblique rotation on a polychoric correlation matrix, an approach suited to the ordinal, non-normally distributed responses. The analysis supported a two-factor structure: Factor 1 captured discipline and psychological aggression, including spanking, yelling, the chancla, cursing, ignoring, comparing, fighting, and religion, while Factor 2 reflected neglect and physical endangerment, such as using drugs in front of a child, refusing treatment for illness, and allowing smoking. The two factors accounted for 29.5 percent of the variance and were moderately correlated. Internal consistency for the full 18-item measure was acceptable at a Cronbach’s alpha of 0.71, though the abusive subscale showed weaker reliability, a limitation the authors acknowledge candidly.

Study 2 then deployed regression models to test how demographic identities shaped perceptions, and the results were revealing. Gender and parental status emerged as the strongest and most consistent predictors: women and parents were significantly more likely to classify culturally acceptable practices as abusive. Among Hispanic participants, those not born in the United States were more likely than U.S.-born Hispanics to view behaviors like spanking as abusive, a finding that ran counter to the researchers’ hypothesis and suggests that acculturation may shift parenting beliefs toward American child protection norms. Across racial and ethnic groups, Hispanic participants were more likely than Black participants to classify culturally acceptable practices as abusive. Notably, for the more overtly harmful behaviors in Factor 2, parental status was the only significant predictor, suggesting broad agreement that neglecting a sick child or encouraging substance use transcends cultural and gendered expectations.

The effect sizes were small, with the models explaining roughly 1 to 6 percent of the variance, a reminder that unmeasured cultural and contextual factors account for most of the variation in how people judge discipline. Still, the patterns carry real implications for prevention. The authors suggest that father-focused education programs may be valuable, since men were less likely to identify physical discipline as harmful and may therefore be at greater risk of normalizing such practices. Culturally adapted interventions have already shown promise, from brief summer parent training programs benefiting Hispanic children to the multinational Triple P Positive Parenting Program, and the PPDS could help practitioners identify which disciplinary practices are perceived as acceptable within specific communities, allowing messaging to be tailored rather than uniform.

The researchers are careful to frame their findings as preliminary. The sample was heavily female and drawn from a single Miami institution in a minority-majority city, socioeconomic status was not assessed, and social desirability bias may have influenced responses to questions about parenting. The abusive subscale needs refinement, and future work should apply confirmatory factor analysis and measurement invariance testing across cultural groups. Yet the core contribution stands: a novel measure that captures culturally situated discipline practices invisible to existing tools like the Alabama Parenting Questionnaire or the Child Abuse Potential Inventory. As parenting practices pass from generation to generation and families cross borders into legal systems with different rules, understanding exactly how culture shapes perceptions of abuse may be the first step toward protecting children without criminalizing the traditions their parents brought with them.

Subject of Research: Development and validation of a scale measuring cultural perceptions of parenting and discipline practices

Article Title: Development and Validation of the Parenting Practices and Discipline Scale in an Ethnically Diverse Sample

Article References: Ortiz Diaz, K., Kenny, M. C., & Baez, H. (2026). Development and Validation of the Parenting Practices and Discipline Scale in an Ethnically Diverse Sample. Journal of Child and Family Studies. https://doi.org/10.1007/s10826-026-03370-6

Image Credits: AI Generated

DOI: 10.1007/s10826-026-03370-6

Keywords: child abuse, parenting practices, discipline, Hispanic families, intersectionality, psychometrics, scale development, cultural perceptions, child welfare, corporal punishment, acculturation, exploratory factor analysis

AZZA PSAZ-750G ATX 3.1 power supply review: An adequate budget 750W unit

13 September 2026 at 14:30

AZZA is one of those brands that has been around far longer than its shelf presence suggests. The company is the PC-components arm of Linkworld Electronic, and it has spent the better part of two decades selling cases, coolers, chassis fans and power supplies into the value end of the market, mostly through regional distribution rather than the big review-sample circuit. That low profile cuts both ways. AZZA has never had the marketing budget to overpromise the way larger brands do, but it also has never had to answer for its power supplies in public the way brands like Corsair or Cooler Master routinely do. Like almost every brand in this segment, AZZA designs none of their units themselves but buys platforms from (usually Chinese) OEMs and puts its own sticker on the side.

The PSAZ series is AZZA's mainstream ATX line, and the PSAZ-750G is the 750W Gold-badged member of it. The unit we have is marked ATX 3.1 and PCIe 5.1 Ready on the box, carries a native 12V-2x6 connector, and is rated for its full 750W at 40°C ambient. It ships with a 2-year warranty, which is a statement all by itself. The platform comes from Helly, a manufacturer that supplies a number of platforms and we meet their products frequently in mainstream units. What makes the PSAZ-750G interesting is not the specification sheet but the badge on it: the box, the label and the retail listings all carry the 80 PLUS Gold logo, and AZZA has not put a PSAZ unit through 80 PLUS certification since 2015. That claim, more than anything else, is what this review has to settle and determine whether it deserves a spot in our list of best power supplies.

Specifications and Design

AZZA PSAZ-750G ATX 3.1 Power specifications ( Rated @ 40 °C )

RAIL

+3.3V

+5V

+12V

+5Vsb

-12V

MAX OUTPUT

20A

20A

62A

2.5A

0.3A

100W

100W

744W

12.5W

3.6W

TOTAL

750W

AC INPUT

100 - 240 VAC, 50 - 60 Hz

MSRP

$78

In the Box

Packaging is plain and inexpensive, and honest about it. The sleeve is a flat slate-blue with the AZZA wordmark rendered as three large outlined chevrons on the left, a line drawing of the unit on the right, and the model and wattage stacked underneath. The badges run along the lower half - PCI-e 5.1 Ready, ATX 3.1, and the 80 PLUS Gold logo in its usual gold square. The unit sits inside between two moulded protective inserts, with the cables bundled beside it.

AZZA PSAZ-750G ATX 3.1

(Image credit: Tom's Hardware)

The bundle is as thin as it gets. There is the AC power cord, four mounting screws and four black zip ties. No Velcro straps, no cable combs, no pouch, no tester, and nothing in the way of printed documentation beyond what is on the box itself. At $78 for a 750W unit, none of that is unreasonable, but it is worth noting that the four zip ties are doing real work here. With a hardwired cable set there is no way to leave unused cables out of the case, so whatever routing tidiness you get, you will be building yourself.

AZZA PSAZ-750G ATX 3.1

(Image credit: Tom's Hardware)

The cables themselves are better than the accessory list implies. All of them are black nylon-sleeved rather than the flat ribbon type common at this price, sleeved right up to the connector housings, and the wire gauges look appropriate throughout. The 12V-2x6 cable is a native run from the PCB rather than an adapter, and it is printed with a 450W rating along its length, which is the single most important thing to know about this power supply before you buy it. That is enough for a mid-range card, and not enough for a 500W+ flagship, regardless of what the 750W on the box suggests. There is no dual-color keying on the connector, so seating it correctly is on you.

AZZA PSAZ-750G ATX 3.1

Connector type

Hardwired

Modular

ATX 24 Pin

1

-

EPS 4+4 Pin

2

-

EPS 8 Pin

-

-

PCI-E 5.1

1

-

PCI-E 8 Pin

3

-

SATA

6

-

Molex

2

-

Floppy

-

-

External Appearance

At 150 x 86 x 140 mm the PSAZ-750G is a standard-depth ATX unit, and 140 mm means it drops into essentially any case that takes an ATX supply, with enough clearance left over to deal with the fixed cable loom. The chassis is finished in a dark grey-brown matte paint and it is a better finish than the price would predict. The top face carries a slotted grille with wide diagonal bars over the fan, cut off at one corner by a plain triangular panel bearing the AZZA logo and a few thin pinstripes. It is a restrained, slightly industrial look, and the diagonal grille bars do restrict airflow area more than a wire or honeycomb grille would, which increases noise.

AZZA PSAZ-750G ATX 3.1

(Image credit: Tom's Hardware)

The side panel carries the only color on the unit: a grey hatched rectangle with the AZZA wordmark in outline and 750W set in a bright cyan that matches the box. The top side holds the specifications label, and it is worth reading. It lists the ATX 3.1 and PCIe 5.1 Ready marks and, again, the 80 PLUS Gold logo.

AZZA PSAZ-750G ATX 3.1

(Image credit: Tom's Hardware)

The rear face is a hexagonal honeycomb exhaust panel with the AC receptacle, the main I/O rocker, and a second, smaller square button beside it. That button is the hybrid fan mode switch: press it and the semi-passive behavior is disabled, so the fan runs continuously from idle rather than waiting for load. It is a feature several units at three times this price still omit, and it is faintly odd to find it here. The front face is solid, with the fixed cable loom leaving through a single rubber-grommeted opening. There is no modular bay, no LED, and no other features.

AZZA PSAZ-750G ATX 3.1
Tom's Hardware
AZZA PSAZ-750G ATX 3.1
Tom's Hardware

Internal Design

Cooling comes from a 120 mm Yate Loon D12BH-12, a ball-bearing fan rated at 12V and 0.60A. Yate Loon publishes this model at 2300 RPM, 89 CFM and 41 dB(A) at full speed, which puts it firmly in the high-airflow, high-noise half of the catalogue. Ball bearings are a durability advantage over the sleeve-bearing fans that usually appear at this price, and given the 2-year warranty that matters - a fan that outlasts the coverage period is the minimum bar. What it is not is a quiet fan, and the platform leans on it hard, as the hot-box results below make clear.

AZZA PSAZ-750G ATX 3.1

(Image credit: Tom's Hardware)

The platform is a Helly design and is similar to the platform Phanteks AMP GH series is using - but that is where the similarities end. The layout is clean and reasonably modern, with the main PCB carrying the primary and secondary stages and a pair of small vertical daughterboards near the front handling the minor rails. Heatsinks are generously sized for the class, dark-anodised finned extrusions rather than the bent aluminium strips that budget platforms often make do with, and the board is well populated with silicone glue on the taller components. The main transformer is marked ATX3.0 on the bobbin, which is a small reminder of how recent the 3.1 revision on the box actually is.

AZZA PSAZ-750G ATX 3.1
Tom's Hardware
AZZA PSAZ-750G ATX 3.1
Tom's Hardware

Transient filtering runs to four Y capacitors, three X capacitors and two common-mode chokes, which is a complete filter by any reasonable standard and better provisioned than several units we have looked at this year. Inrush is handled by an NTC thermistor with a relay for bypass. Two bridge rectifiers sit on their own dedicated heatsink, feeding an APFC stage built around two Oriental Semiconductor OSG55R190F MOSFETs. The bulk capacitor is a 560 µF, 420V Ltec from its HP series, rated at 105°C. That is a low-cost Taiwanese part rather than a premium one, and it is the first place the budget shows. Capacity is adequate for 750W, the temperature rating is right, but the pedigree is not. The APFC coil beside is unshielded, which is a cost decision rather than a functional problem, though it does nothing for radiated noise.

AZZA PSAZ-750G ATX 3.1

(Image credit: Tom's Hardware)

The primary inversion stage uses two PIP PTA25N50 MOSFETs in a half-bridge LLC resonant arrangement, the standard modern topology at this power level. On the secondary side, the 12V rail is rectified by four Fuxin FXN0204C MOSFETs in synchronous rectification, with the 3.3V and 5V rails generated by DC-to-DC converters on the two vertical daughterboards.

AZZA PSAZ-750G ATX 3.1
Tom's Hardware
AZZA PSAZ-750G ATX 3.1
Tom's Hardware

Secondary filtering is a mix of Ltec electrolytics and a smaller number of APAQ polymer capacitors, both Taiwanese. This is the part of the component list that will decide how the unit ages: Ltec electrolytics are not terrible parts, but they are at best ordinary ones, and they will spend their life sitting next to secondary heatsinks that may hit well over 70 °C in a normal system. A 2-year warranty against that combination is not a comfortable pairing.

AZZA PSAZ-750G ATX 3.1

(Image credit: Tom's Hardware)

Cold Test Results (25°C Ambient)

Cold Test Results (25°C Ambient)

For the testing of PSUs, we are using high-precision electronic loads with a maximum power draw of 2700 Watts, a Rigol DS5042M 40 MHz oscilloscope, an Extech 380803 power analyzer, two high-precision UNI-T UT-325 digital thermometers, an Extech HD600 SPL meter, a self-designed hotbox, and various other bits and parts.

AZZA PSAZ-750G ATX 3.1
Tom's Hardware
AZZA PSAZ-750G ATX 3.1
Tom's Hardware
AZZA PSAZ-750G ATX 3.1
Tom's Hardware
AZZA PSAZ-750G ATX 3.1
Tom's Hardware
AZZA PSAZ-750G ATX 3.1
Tom's Hardware

At 25°C ambient the PSAZ-750G averaged 90.6% at 230 VAC and 88.6% at 115 VAC across the nominal load range. The curve peaks at about 92% at 230 VAC around 300W and holds 90.2% at a sustained 750W, with the 115 VAC line topping out at 90.3% and finishing at 87.3%. Those are respectable numbers and the shape of the curve is healthy, with no full-load collapse. They are also, and this is the point, not Gold. 80 PLUS Gold requires 90/92/89% at 20/50/100% load on 230 VAC and 87/90/87% on 115 VAC. We measured 90.1/91.8/90.2% and 88.7/89.9/87.1% respectively. The unit clears the 20% and 100% checkpoints on both inputs and misses the 50% checkpoint on both, by 0.2 and 0.1 points. It is a near miss rather than a fraud and CLEAResult tests at 23 °C so it could possibly pass, but there is no 80 PLUS entry for the PSAZ series after 2015 to argue otherwise. There is no Cybenetics listing either.

Acoustically the cold run is the best part of this review. The fan stays completely stopped up to roughly 40% load, giving a genuine 300W fanless window that covers desktop work and a good deal of gaming outright. It starts at 31.6 dB(A) and ramps gently to about 33 dB(A) at half load, at which point it becomes the quietest thing in most builds. Past 450W the curve steepens noticeably, reaching 38 dB(A) at 600W and 42 dB(A) at a sustained 750W. That is audible but not intrusive, and it is a reasonable trade for a good thermal result. The heatsinks reached 66-68°C at full load. Nothing here is under severe stress.

Hot Test Results (~45°C Ambient)

Hot Test Results (~45°C Ambient)

Inside the hotbox at roughly 45°C ambient, five degrees above the unit's own 40°C rating, efficiency falls by roughly a point and a half. It was not an unexpected result but it is severe for a 750W unit. The averages come to 89.4% at 230 VAC and 87.5% at 115 VAC, with the curve peaking near 90.8% and finishing at 88.5% and 85.6% respectively at full load. Nothing in the electrical behavior suggests the platform is in deep trouble but we can see the signs of thermal degradation at full load.

AZZA PSAZ-750G ATX 3.1
Tom's Hardware
AZZA PSAZ-750G ATX 3.1
Tom's Hardware
AZZA PSAZ-750G ATX 3.1
Tom's Hardware
AZZA PSAZ-750G ATX 3.1
Tom's Hardware
AZZA PSAZ-750G ATX 3.1
Tom's Hardware

The thermal and acoustic picture is where the platform shows its limits. The fan leaves its passive mode in the hot box very quickly, starting at about 33.6 dB(A) from 200W, then climbing steeply and continuously: 43 dB(A) at 500W, 48.6 dB(A) at 600W, and 52.2 dB(A) at a sustained 750W. That last figure is loud in the plain sense of the word, well past the point where the PSU is the loudest component in a mid-tower and into the range where it likely is the loudest thing in the room. It is also the fan doing exactly what it should, because the internal temperatures need it. The heatsinks reached 94°C at full load, which is on the high side for a 750W unit. Those are not typically failure temperatures, but they are high enough to matter for the Ltec secondary electrolytics sitting beside them over a several-year ownership period.

PSU Quality and Bottom Line

Power Supply Quality

Voltage regulation is the strongest result on the sheet. Across the 20% to 100% load span the 12V rail moved by just 0.9%, with the 3.3V and 5V rails both at 1.4%. Sub-1% on 12V is genuinely good, better than several other Gold units, and it is the credit side of the DC-to-DC secondary arrangement. The minor rails are looser, but both stay comfortably inside the ±5% ATX window and neither matters much to a modern system.

Ripple suppression is adequate rather than good. The 12V rail peaked at 52 mV at full load and 50 mV in the 12V-weighted cross-load test, against a 120 mV ATX limit. The 3.3V and 5V rails topped out at 26 and 28 mV against their 50 mV limits. Those are passes with about 57% headroom on 12V and roughly 45% on the minor rails, so nothing is close to the edge. They are also roughly double what a well-filtered enthusiast platform delivers, and the 12V figure more than doubles between 50% and 100% load, which points at secondary filtering that is sized to the requirement rather than beyond it. For the hardware a 750W unit at this price will actually feed, it is sufficient.

During our thorough assessment, we evaluate the essential protection features of every power supply unit we review, including Over Current Protection (OCP), Over Voltage Protection (OVP), Over Power Protection (OPP), and Short Circuit Protection (SCP).

All protection mechanisms were present and triggered correctly. With the unit hot, OCP tripped at 146% on the 3.3V rail (29.2A), 140% on the 5V rail (28A), and 128% on the 12V rail (79.4A), with OPP shutting the unit down at about 130% of rated output, or roughly 975W. The 12V threshold is the sensible one of the three. The minor-rail thresholds are loose enough that the 100W combined budget is the real constraint there, not the protection.

Main Output

Load (Watts)

151.27 W

377.39 W

563.17 W

749.01 W

Load (Percent)

20.17%

50.32%

75.09%

99.87%

Amperes

Volts

Amperes

Volts

Amperes

Volts

Amperes

Volts

3.3 V

1.81

3.37

4.53

3.36

6.8

3.33

9.07

3.32

5 V

1.81

5.06

4.53

5.05

6.8

5.01

9.07

4.99

12 V

11.25

12.09

28.11

12.07

42.17

12.01

56.23

11.98

Line

Regulation

Voltage Ripple (mV)

(20% to 100% load)

20% Load

50% Load

75% Load

100% Load

CL1
12V

CL2
3.3V + 5V

3.3V

1.4%

20

16

22

26

22

26

5V

1.4%

20

16

20

28

22

26

12V

0.9%

30

22

36

52

50

28

Bottom Line

The PSAZ-750G is a competent budget power supply carrying a claim it cannot support. The Helly platform underneath is more modern than the price suggests and used by several manufacturers at this price point. Inside, we have a half-bridge LLC primary, DC-to-DC minor rails, a complete transient filter, generously sized heatsinks, a ball-bearing fan and a native 12V-2x6 connector. Regulation on the 12V rail is genuinely good at 0.9%, ripple is comfortably inside specification everywhere, protections all work and trip at sane thresholds, and the 300W fanless window at room temperature is real. There is nothing broken here.

AZZA PSAZ-750G ATX 3.1

(Image credit: Tom's Hardware)

The efficiency claim, however, is one that does not survive contact with the bench. Our numbers put the unit 0.2 points under the Gold requirement at 50% load on 230 VAC and 0.1 under it on 115 VAC, clearing every other checkpoint. CLEAResult tests at 23°C, so a good sample could plausibly clear the bar on the official bench. On the other hand, other units using the same platform passed our testing, even if they were fully modular (typically hardwired cables increase efficiency slightly). AZZA has not certified a PSAZ unit since 2015, there is no official 80 PLUS entry for this particular model, no Cybenetics listing and no PLPP listing, yet the Gold logo is printed on the box, on the label and in the retail listings. The unit performs like a borderline Gold supply. It is being sold as a certified one. Those are not the same thing, and the second is the vendor's choice, not a measurement artifact.

Most of the remaining compromises are ordinary for the money. Hardwired cabling at 750W in 2026 is behind the market but forgivable at $78, but the Ltec capacitors is what a $78 budget buys. One thing is harder to wave through. That is the 2-year warranty, which is half or less of what every serious competitor offers; set against heatsinks that reached 94°C at full load in the hot box, with ordinary electrolytics sitting beside them, it reads as the manufacturer telling you how long it expects the unit to be its problem.

AZZA PSAZ-750G ATX 3.1

(Image credit: Tom's Hardware)

Against named rivals, the placement is straightforward. The Phanteks AMP GH series runs a related Helly platform, which is worth keeping in mind - the design itself is not the problem here; the specification is. The MSI MAG A750GL PCIE5 is fully modular, genuinely 80 PLUS Gold certified, and backed by a 10-year warranty, and it is better than the AZZA on every axis except price. The Cooler Master MWE Gold 750 V4 at $119 MSRP is quieter under sustained load, carries verified Gold efficiency and a 10-year warranty, and gives up only a little on 12V regulation, where the AZZA's 0.9% is the better figure.

The PSAZ-750G beats them on nothing but cost, but it beats them there by a wide margin. So the recommendation is narrow but real. If you are building a mid-range machine on a tight budget, the card you are pairing it with draws under 450W, and you can live with 2 years of coverage and a fixed cable loom, the PSAZ-750G will do the job, and it will do it quietly at the loads you will actually run. If any of those three conditions do not hold, the extra money for a certified, longer-warrantied, fully modular unit is the better spend, and it is not a close call. Buy it for what it measures, not for the badge on the box.

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Thermalright TR-KG750 750W power supply review: HKC-built KG unit with a Thermalright badge for $91

11 September 2026 at 12:05

Thermalright is a CPU cooling company that happens to sell power supplies. Established in Taipei in 2001, it spent its first two decades building a reputation on air coolers - the Ultra-120 eXtreme and the HR series were enthusiast reference points long before the current wave of tower coolers - then drifted out of the conversation for years before the Peerless Assassin 120 dragged it back to the top of every budget build list in 2021. Its catalog has expanded aggressively since: case fans, all-in-one liquid coolers, thermal compounds, chassis, and, since 2022, power supplies. That last category deserves a different kind of scrutiny than the rest. Much like most brand names, Thermalright does not build power supplies; it commissions them, and a heatsink company's engineering credibility transfers to a PSU exactly as far as the OEM behind it allows. Every Thermalright power supply has to be judged on its platform rather than its badge.

The KG series occupies the value end of Thermalright's power supply range, and the TR-KG750 reviewed here is its 750W entry. How does it hold up against the best power supplies on the market? On paper, the specification is current, with ATX 3.1 and PCIe 5.1 compliance, a native 12V-2x6 connector, full modularity, 80 PLUS Gold certification at 115 VAC, a 120 mm fan inside a 140 mm-deep chassis, and a five-year warranty. The label on the PSU itself answers the platform question without much digging. The manufacturer of record is Somore Tech Co., Ltd., the production is credited to Jiushouyangguang Power Supply (Shenzhen), and the internal designation printed beside the 80 PLUS badge is HKCMAX-750 - this is an HKC platform, and the silkscreen on the main board dates the design to April 2023. There is no Cybenetics entry for the model at the time of writing, so the 80 PLUS report is the only third-party data available on it. At a retail price of $91, it undercuts essentially every name-brand 750W Gold unit on the US market, which is the whole of its pitch.

Specifications and Design

Thermalright TR-KG750 Power specifications ( Rated @ 40 °C )

RAIL

+3.3V

+5V

+12V

+5Vsb

-12V

MAX OUTPUT

20A

20A

62.5A

3A

0.3A

100W

100W

750W

15W

3.6W

TOTAL

750W

AC INPUT

100 - 240 VAC, 50 - 60 Hz

MSRP

$91

In the Box

The TR-KG750 arrives in a compact cardboard box wrapped in a black-to-bronze gradient sleeve, with a three-quarter render of the unit dominating the front and the wattage set in large gold type beside it. The badge strip along the bottom edge is short: 80 PLUS Gold, ATX 3.1, PCIe 5.1, and the model number.

ThermalRight TR-KG750 750W

(Image credit: Tom's Hardware)

The bundle is as thin as they come. Under the protective packaging the supply is accompanied by a multilingual user’s guide, the AC power cord, a small bag of mounting screws, and four zip ties. That is the entire accessory list: no Velcro straps, no cable combs, no storage pouch. Four zip ties for an eight-cable modular supply is a token rather than a provision, and it is one of the few places where the price makes itself felt before you take the lid off.

ThermalRight TR-KG750 750W

(Image credit: Tom's Hardware)

The cables are all-black flat ribbon types throughout, with no sleeving anywhere in the set. They are all uniform, adding points to the aesthetics of the unit. The 12V-2x6 cable is native - a single run from the modular panel to the graphics card, with no adapter or splitter involved - but its plug does not use the dual-color keying the ATX 3.1 specification encourages, which makes an incompletely seated connector easy to spot at a glance.

ThermalRight TR-KG750 750W

(Image credit: Tom's Hardware)
Thermalright TR-KG750

Connector type

Hardwired

Modular

ATX 24 Pin

-

1

EPS 4+4 Pin

-

2

PCI-E 5.1

-

1

PCI-E 8 Pin

-

2

SATA

-

6

Molex

-

3

Floppy

-

-

External Appearance

At 150 x 86 x 140 mm, the TR-KG750 is a standard-width ATX unit with a short 140 mm body, which is about as compact as a 750W supply practically gets and leaves useful slack for cable management even in a mid-tower. The chassis is finished in a matte black with a fine texture, and the top panel carries a stamped fan grille in a diamond-and-chevron pattern - four angled spokes radiating from a central square, framed by long slotted vents - with the Thermalright wordmark pressed into a raised panel at the edge. Four exposed screws sit at the corners, one of them beneath the warranty-void sticker.

ThermalRight TR-KG750 750W

(Image credit: Tom's Hardware)

The rear face is a large square perforated exhaust panel with the AC receptacle and a rocker. The front face hosts the modular connector bay, cleanly silkscreened into four labeled groups: MOTHERBOARD for the split 24-pin, SATA/PATA for the peripheral cables, CPU/PCIe for the four eight-pin sockets, and a dedicated 12V 2x6 socket in the bottom corner. A scratch-off authenticity tag with a QR code sits alongside the panel.

ThermalRight TR-KG750 750W
Tom's Hardware
ThermalRight TR-KG750 750W
Tom's Hardware

The specification label occupies the top face rather than a side panel, which is the more useful placement for a bottom-mounted supply sitting under a windowed case, and both side panels are given over to a large bronze-gradient decal carrying the wattage, model number, and 80 PLUS Gold badge. That decal is the only decoration, and the finish underneath it is unremarkable but honest - evenly applied, no orange peel, no sharp edges. The label repeats the rail ratings, the CCC certificate number, and the internal model designation, and it is where the platform gives itself away. Build quality overall is what the price suggests: the steel gauge is adequate, the panels line up, nothing rattles, but there is none of the extra finishing that separates a $90 unit from a $150 one.

ThermalRight TR-KG750 750W
Tom's Hardware
ThermalRight TR-KG750 750W
Tom's Hardware

Internal Design

Cooling is handled by a 120 mm Yate Loon D12SH-12 rated for 12V at 0.30A. Yate Loon is a long-established Chinese fan maker, and the D-series is its bread-and-butter sleeve-bearing line, which makes this the single most consequential cost-saving in the unit. Sleeve bearings are quiet, like fluid-dynamic alternatives at equivalent speed, but wear faster and are more sensitive to heat and mounting orientation - all three of which matter in a supply that, as the test results show, runs its fan constantly and pushes it hard as soon as ambient temperature rises. The five-year warranty covers the fan, but it is not a part most owners will enjoy chasing a replacement for.

ThermalRight TR-KG750 750W

(Image credit: Tom's Hardware)

The platform is HKC’s, supplied to Thermalright under the internal designation HKCMAX-750, and the main board is silkscreened as ATX32 Main BD Rev1.2. A row of wattage selection pads along the board edge runs from 500W to 850W, with the 750W position populated, confirming this is a single design scaled across a whole product family rather than a layout drawn for 750W specifically. Component density is fair, the soldering is tidy, and some black silicone anchors the larger parts. Only two heatsinks are fitted - a small one carrying the input bridges and a taller, simple finned unit shared by the APFC and primary switching stages - and everything on the secondary side relies on the PCB and a tiny sheet heatsink soldered to it.

ThermalRight TR-KG750 750W
Tom's Hardware
ThermalRight TR-KG750 750W
Tom's Hardware

The transient filtering stage starts at the back of the AC receptacle and continues on the main PCB. In total, there are four Y capacitors, two X capacitors, and two filtering inductors, with an MOV and an NTC thermistor also present - a complete filter with nothing omitted, if not a generous one. Two input rectifying bridges follow on their own small dedicated heatsink. The APFC stage uses two MOSFETs and a boost diode sharing the tall heatsink, paired with a large open-frame filtering coil, and the bulk capacitor is a Nichicon 450V/560 uF part from the 105C-rated GN(M) series. That capacitor is comfortably the best component in the unit and practically the only one sourced from a manufacturer with a genuine reliability record. The primary inversion stage is a half-bridge arrangement built from two 65R160FR MOSFETs on the shared heatsink, feeding the main transformer.

ThermalRight TR-KG750 750W

(Image credit: Tom's Hardware)

The secondary side is where the cost engineering becomes plain. The 12V rail is rectified by six Perfertway PWC012N04ES MOSFETs mounted directly on the main PCB with no heatsink of their own, and the 3.3V and 5V rails are derived from DC-to-DC converters that also live on the main board rather than a vertical daughterboard. As a layout, this is conventional and modern. The problem is provenance: essentially every active device in the conversion path - the bridges, the APFC and primary MOSFETs, the six synchronous rectifiers - comes from manufacturers with no established track record in this application. Secondary filtering is a mix of Teapo parts and capacitors branded NICON that, despite carrying a series designation borrowed from Nippon Chemi-Con’s catalog, do not appear to be a genuine Nippon Chemi-Con nor a Nichicon product, and polymer capacitors handle high-frequency filtering on the modular board. None of this is unusual at the price. It is worth stating plainly, though, that the "all Japanese" capacitor language attached to some retail listings for this model describes the bulk capacitor and nothing else.

ThermalRight TR-KG750 750W
Tom's Hardware
ThermalRight TR-KG750 750W
Tom's Hardware

Cold Test Results (25°C Ambient)

Cold Test Results (25°C Ambient)

For the testing of PSUs, we are using high-precision electronic loads with a maximum power draw of 2700 Watts, a Rigol DS5042M 40 MHz oscilloscope, an Extech 380803 power analyzer, two high-precision UNI-T UT-325 digital thermometers, an Extech HD600 SPL meter, a self-designed hotbox, and various other bits and parts.

ThermalRight TR-KG750 750W
Tom's Hardware
ThermalRight TR-KG750 750W
Tom's Hardware
ThermalRight TR-KG750 750W
Tom's Hardware
ThermalRight TR-KG750 750W
Tom's Hardware
ThermalRight TR-KG750 750W
Tom's Hardware

At 25°C ambient, the TR-KG750 averaged 89.5% at 230 VAC and 88.5% at 115 VAC across the nominal load range, peaking at 91.2% and 90.3%, respectively, at 50% load and settling to 89.2% and 87.9% at a sustained 750W. The curve is well shaped, with the usual broad plateau between 40% and 70% load and no collapse at the top end. What it does not have is margin. Against the 80 PLUS Gold thresholds at 115 VAC - 87% at 20% load, 90% at 50%, and 87% at 100% - our measured 87.2%, 90.3%, and 87.9% clear the bar by 0.2, 0.3, and 0.9 percentage points. The unit’s own 80 PLUS report reads slightly kinder at 90.2%, 91.4% and 88.3%, but the conclusion does not change: this is a Gold unit by a narrow margin.

Acoustically, there is no great news. The Yate Loon spins whenever the supply is powered but remains quiet across the first half of the load range. The ramp through the middle of the range is gentle enough, but it steepens past 70% load, reaching 42 dB(A) at 600W and almost 51 dB(A) at a sustained 750W. That is loud for an efficient 750W unit at room temperature. Thermally, the platform is comfortable at 25°C. The primary and secondary heatsinks stabilized at around 60°C. Those are unremarkable numbers, with the small heatsinks and mediocre efficiency being the obvious culprits.

Hot Test Results (~45°C Ambient)

Hot Test Results (~45°C Ambient)

Inside the hotbox at roughly 45°C ambient - five degrees beyond the unit’s own 40°C rating - efficiency averaged 87.6% at 230 VAC and 86.6% at 115 VAC, an almost uniform 1.9-point loss against the cold run. Full load is where the degradation concentrates: 85.8% at 230 VAC and 84.5% at 115 VAC, both 3.4 points down on the 25°C figures. A drop of that size is larger than we like to see, and it puts the unit well outside Gold territory under heat, although it is being measured beyond its rated envelope and the shape of the curve essentially holds throughout. The supply completed every load step without shutting down.

ThermalRight TR-KG750 750W
Tom's Hardware
ThermalRight TR-KG750 750W
Tom's Hardware
ThermalRight TR-KG750 750W
Tom's Hardware
ThermalRight TR-KG750 750W
Tom's Hardware
ThermalRight TR-KG750 750W
Tom's Hardware

Heat turns the fan from merely constant into genuinely intrusive. The floor rises to 37 dB(A), which is audible but not dramatic. It maintains reasonable noise figures up to 525W and then the curve breaks: between 525W and 600W the fan jumps almost ten decibels to 56 dB(A), settling at 58 dB(A) at a sustained 750W. A step that abrupt points to a coarse thermal control scheme rather than a tuned curve, and at 58 dB(A) the power supply is likely to be the loudest component in almost any system. The internal readings explain the urgency: the primary heatsink reached well over 100°C at full load. Those are very high figures for parts of uncertain pedigree and for a 750W PSU, and while the unit held together for the duration, sustained full load at 45°C is not an environment we would ask this platform to live in.

PSU Quality and Bottom Line

Power Supply Quality

Voltage regulation is adequate rather than tight. Between 20% and 100% load, the 3.3V rail moved 1.2%, the 5V rail 1.4%, and the 12V rail 1.8%. The 12V figure is the one that matters, and it is the loosest of the three, sliding from 12.11V at 151.5W to 11.89V at 744.5W. That sits comfortably inside the ±5% ATX window and will not trouble any component, but it is roughly double what a well-tuned modern LLC platform delivers, and most of the drop arrives between 50% and 75% load rather than being spread evenly across the range.

Ripple suppression follows the same pattern of simple adequacy. On the 12V rail we measured 24 mV at 20% load rising to 62 mV at full load, against the 120 mV ATX limit - a comfortable pass with roughly 48% headroom, though the jump from 38 mV at 75% load to 62 mV at 100% is steeper than the rest of the curve. The minor rails run closer to their ceilings: 34 mV on 3.3V and 38 mV on 5V against a 50 mV limit, leaving 32% and 24% headroom respectively. Cross-load behavior was unremarkable, with 60 mV on 12V under the 12V-heavy test and 34 mV on 5V under the minor-rail test. None of this is a problem for the hardware a 750W supply will realistically feed, but the minor rails have less room than we would expect from a DC-to-DC design.

During our thorough assessment, we evaluate the essential protection features of every power supply unit we review, including Over Current Protection (OCP), Over Voltage Protection (OVP), Over Power Protection (OPP), and Short Circuit Protection (SCP).

All protection mechanisms were verified and triggered correctly during testing. With the unit hot, OCP tripped at 140% on the 3.3V rail (28A), 142% on the 5V rail (28.4A), and 136% on the 12V rail (85A), with OPP shutting the supply down at 134% of rated output, or approximately 1005W. Those are generous thresholds, more generous than most mainstream 750W units carry, and they mean the platform will ride out the transient excursions a modern graphics card throws at it without any complaint - which is precisely what ATX 3.1 compliance is meant to guarantee.

Main Output

Load (Watts)

151.52 W

377.76 W

558.95 W

744.47 W

Load (Percent)

20.2%

50.37%

74.53%

99.26%

Amperes

Volts

Amperes

Volts

Amperes

Volts

Amperes

Volts

3.3 V

1.8

3.38

4.5

3.37

6.75

3.36

9

3.34

5 V

1.8

5.11

4.5

5.10

6.75

5.05

9

5.04

12 V

11.25

12.11

28.14

12.07

42.2

11.90

56.27

11.89

Line

Regulation

Voltage Ripple (mV)

(20% to 100% load)

20% Load

50% Load

75% Load

100% Load

CL1
12V

CL2
3.3V + 5V

3.3V

1.2%

22

26

30

34

24

30

5V

1.4%

20

26

32

38

24

34

12V

1.8%

24

30

38

62

60

32

Bottom Line

What the TR-KG750 is, stated plainly, is an HKC platform wearing a Thermalright badge at a $91 price, and most of what follows from that is predictable. The specification sheet is current - ATX 3.1, PCIe 5.1, a native 12V-2x6 connector, full modularity, a compact 140 mm chassis - and the engineering is competent in the sense that nothing is missing or obviously wrong. The transient filter is complete, the topology is a modern half-bridge LLC with DC-to-DC minor rails, and the Nichicon bulk capacitor is a real Japanese part. Measured performance is broadly consistent with the class: regulation within 2% on every rail, ripple with meaningful headroom on 12V, and protection thresholds more generous than most.

ThermalRight TR-KG750 750W

(Image credit: Tom's Hardware)

The problems concentrate in two places. The first is efficiency, where the unit clears its 80 PLUS Gold thresholds at 115 VAC by a small margin. Certification is a floor, and this unit sits on it. Under heat, the margin vanishes entirely - 84.5% at 115 VAC and full load - and with no Cybenetics listing, there is no other independent data to weigh against ours. The second is acoustics, and the fault there is part control, part hardware. The Yate Loon is quiet enough through the first half of the load range, but the curve steepens past 70%, and the supply reaches almost 51 dB(A) at a sustained 750W at room temperature. In a warm case, it is worse: a ten-decibel step between 525W and 600W, and 58 dB(A) from there to full load. That is a coarse fan profile rather than a tuned one, and there is no fanless mode to fall back on at idle. It was little choice, as the heatsinks are too small to combat such thermal needs. Builders who care about a perfectly quiet machine can stop reading here.

Underneath those sit the component choices. The Nichicon bulk capacitor aside, the secondary filtering is Teapo and NICON, and every active device in the conversion path - bridges, APFC and primary MOSFETs, the six synchronous rectifiers - comes from manufacturers with no track record to point at. That is not automatically a defect; plenty of anonymous silicon runs happily for a decade. But it is unverifiable, and heatsink temperatures well over 100°C at 45°C ambient leave less comfort than we would like, as does a sleeve-bearing fan if asked to run continuously in that heat. The five-year warranty is doing real work in the value case here, and it is the correct length for this class rather than a generous one.

ThermalRight TR-KG750 750W

(Image credit: Tom's Hardware)

At $91, the TR-KG750 is around $30 cheaper than the Cooler Master MWE Gold 750 V4, and that comparison is the instructive one. The Cooler Master is quieter by a wide margin, holds tighter regulation, runs a cooler secondary side under heat, and carries a ten-year warranty; the Thermalright answers with a lower price, and concedes almost everything else. Set against the Thermaltake Toughpower GX3 850W or the MSI MAG A850GLS, the picture is similar - more wattage and better-documented platforms, for more money. The TR-KG750 earns its place on price alone. If the budget is fixed near $90 and the machine lives under a desk rather than on it, this is a defensible purchase with a current feature set and adequate measured performance behind it. If there is $30 of headroom, or if noise matters substantially, have a look at higher price tags.

MORE: Best Power Supplies

MORE: How We Test Power Supplies

MORE: All Power Supply Content

Phanteks AMP GH 750W power supply review: Great buy at sub-$90 street pricing, but comes with a 450W cap on its 12V-2x6 connector

9 September 2026 at 12:05

Phanteks is a Dutch company, founded in 2007 and best known for enclosures, alongside air coolers, AIOs, and a steadily expanding catalog of accessories. Power supplies came later, and they have always been commissioned work. As with most such companies, Phanteks does not own a factory, and the identity of the power supply inside a Phanteks box has changed more than once. For example, the original AMP series from 2020 was a Seasonic Focus derivative, a genuinely strong platform that earned the AMP series a significant reputation. The AMP GH is the current mainstream range, and it is a different animal.

The platform of the AMP GH 750W that we are reviewing today comes from Helly Technology, the Guangzhou outfit founded in 2008 that has spent the last few years building the mid- and upper-tier units. Young by the standards of this industry, but no longer an unknown quantity. The series spans 650W to 1200W across Gold and Platinum tiers, in black or white. We take a closer look at the AMP GH 750W to see how it ranks against our best power supplies list. Everything in it is ATX 3.1 and PCIe 5.1 compliant, fully modular, and cooled by a single 120 mm fan that stops entirely at low load. The 750W model reviewed here is the volume seller of the range, aiming squarely at the mid-range gaming build.

Specifications and Design

Phanteks AMP GH 750W Power specifications ( Rated @ 40 °C )

RAIL

+3.3V

+5V

+12V

+5Vsb

-12V

MAX OUTPUT

20A

20A

62A

2.5A

0.3A

100W

100W

744W

12.5W

3.6W

TOTAL

750W

AC INPUT

100 - 240 VAC, 50 - 60 Hz

MSRP

$110

In the Box

The AMP GH 750 arrives in a white cardboard box with mint-green edges and sides, the product name in large type across the front, and the 80 PLUS Gold badge in the top corner. Three black-and-grey strips along the bottom edge carry the three main headline claims: ATX 3.1 PSU, PCIe Gen5.1 support, fully modular. That is about the extent of the marketing. It is a restrained, we dare say almost clinical presentation next to what most of this segment ships in.

Phanteks  AMP GH 750W

(Image credit: Tom's Hardware)

Inside, the power supply sits between molded protective inserts, with the cables bagged separately. The bundle is far better than the price suggests and one of the most complete we have seen this year. It comprises of the AC cable, four chrome mounting screws, a very generous bunch of white zip ties, a few black and white Velcro straps, and a bag of white cable combs. There is also an installation guide and manual that are shared across the whole series.

Phanteks  AMP GH 750W

(Image credit: Tom's Hardware)

The cables themselves are the highlight. Every wire is individually sleeved in white braid rather than the flat ribbon type this class usually gets, and they stay flexible enough to be easily routed. Even the 12V-2x6 signal wires are, creating a very high-quality aesthetic result. They do take up a little bit more room behind a motherboard tray than flat cables would, but we are certain that this is a sacrifice builders are willing to make. The 12V-2x6 cable is marked 450W on the connector housing and uses mint-green latch tabs, which do double duty as a seating indicator (if you can still see green, the plug is incorrectly seated). The 12V-2x6 and ATX 24-pin cables have cable combs pre-installed.

Phanteks  AMP GH 750W
Tom's Hardware
Phanteks  AMP GH 750W
Tom's Hardware
Phanteks AMP GH 750W

Connector type

Hardwired

Modular

ATX 24 Pin

-

1

EPS 4+4 Pin

-

2

PCI-E 5.1

-

1

PCI-E 8 Pin

-

3

SATA

-

6

Molex

-

2

Floppy

-

-

External Appearance

At 140 x 150 x 86 mm, the AMP GH 750 is about as short as a modern ATX unit gets, which means it will fit anything that takes a standard supply and leave room for cable slack in front of it. Our sample obviously is the white version, and the finish is the first thing worth commenting on. It is a clean, even satin snow white with an exceptional finish. This is not a given with white units, as they can easily look a little grey next to a truly white item/case. This one does not. Phanteks also sells the unit in black, and at MSRP, the black version is $10 cheaper.

Phanteks  AMP GH 750W

(Image credit: Tom's Hardware)

The bottom carries a fan grille cut as a field of staggered rectangles rather than the usual honeycomb, with the company logo embossed across the middle and four polished exposed screws at the corners. The side panels get the company and series logo, as well as a scattered pixel-dot pattern in grey. The specification label is found at the top. The specification label deserves a read before purchase: 62A on the 12V rail for 744W, 100W combined on the minor rails, and a separate line stating 450W for the 12V-2x6 output. That is a hard limit on what you can hang off the single native Gen5 connector, and it is printed on the unit and on the connector rather than buried in a datasheet, which is at least honest.

Phanteks  AMP GH 750W
Tom's Hardware
Phanteks  AMP GH 750W
Tom's Hardware

The rear face is somewhat straightforward, with an AC receptacle and a rocker switch, with the only difference being that these are all white. Even though one is pictured in the manufacturer’s website, there is no switch for the semi-passive mode, so the fanless mode is automatic and not something you can override in either direction. The front of the unit hosts the connectors for the modular cables. The top row starts with the dedicated 12V-2x6 socket and continues with five shared 8-pin sockets marked CPU and PCIe. The bottom row has three sockets for the SATA and Molex cables, then two for the motherboard cable.

Phanteks  AMP GH 750W
Tom's Hardware
Phanteks  AMP GH 750W
Tom's Hardware

Internal Design

Cooling comes from a 120 mm Yate Loon D12SH-12, a 12V/0.3A sleeve-bearing fan rated for 2200 RPM in Yate Loon's catalog. Yate Loon is a long-standing name, and the D12SH has been turning up in power supplies for years, but a sleeve bearing is a sleeve bearing - it is the cheapest part of an otherwise decent bill of materials. The fan is white to match the chassis rather than the usual black part hidden behind a grille.

Phanteks  AMP GH 750W

(Image credit: Tom's Hardware)

The platform is Helly's, and the layout is tidy. We have proper heatsinks rather than basic aluminum plates, sensible component spacing, and a restrained amount of glue holding the taller parts down. Transient filtering begins at the AC receptacle and continues on the main board, totaling three X capacitors, four Y capacitors, and two filtering inductors. Two bridge rectifiers sit on their own dedicated heatsink, which is more than this class usually gets.

Phanteks  AMP GH 750W
Tom's Hardware
Phanteks  AMP GH 750W
Tom's Hardware

The APFC stage uses a pair of Oriental Semiconductor OSG55R190F MOSFETs, sharing the long heatsink with the primary side inversion switchers. This is a common cost-and-space-saving arrangement but hardly matters when the heatsink is large enough. The bulk capacitor is a Nichicon rated 560 μF at 420V and 105°C and the choke beside it is on the small side and unshielded. Primary inversion is a half-bridge LLC resonant arrangement driving two PIP PTA25N50 MOSFETs, which is the standard and entirely sensible topology for a 750W Gold unit.

Phanteks  AMP GH 750W
Tom's Hardware
Phanteks  AMP GH 750W
Tom's Hardware

On the secondary side, four Fuxin FXN0204C MOSFETs generate the 12V rail through synchronous rectification, and the 3.3V and 5V rails come off two vertical DC-DC daughterboards standing near the modular connector board. Capacitor sourcing is the pleasant surprise, with the secondary electrolytics coming from Rubycon and Nippon Chemi-Con and APAQ polymers filling the rest. That is a fully Japanese set of capacitors on a unit that sells for under $90, and it is the single strongest argument that the 8-year warranty is more than a marketing number.

Phanteks  AMP GH 750W
Tom's Hardware
Phanteks  AMP GH 750W
Tom's Hardware

Cold Test Results (25°C Ambient)

Cold Test Results (25°C Ambient)

For the testing of PSUs, we are using high-precision electronic loads with a maximum power draw of 2700 Watts, a Rigol DS5042M 40 MHz oscilloscope, an Extech 380803 power analyzer, two high-precision UNI-T UT-325 digital thermometers, an Extech HD600 SPL meter, a self-designed hotbox, and various other bits and parts.

Phanteks  AMP GH 750W
Tom's Hardware
Phanteks  AMP GH 750W
Tom's Hardware
Phanteks  AMP GH 750W
Tom's Hardware
Phanteks  AMP GH 750W
Tom's Hardware
Phanteks  AMP GH 750W
Tom's Hardware

At 25°C ambient, the AMP GH 750 averaged 91.0% at 230 VAC and 89.0% at 115 VAC across the full load range, peaking at 92.3% (230 VAC) at around 300W and holding 90.8% at a sustained 750W. The curve is well shaped. It climbs fast, is stable between 250W and 450W, and loses very little ground at the top end, which is exactly the profile you want from a PSU that will spend its life between 30% and 70% load. At 115 VAC, the equivalent figures are 90.6% at peak and 87.5% at full load. The 80 PLUS Gold asks for 87% at 100% load on 115V, so the margin is half a point. It is a pass, but our numbers land roughly one point below the CLEAResult published certification report, which is dated 4/8/22 and lists the same PH-P750GH_01 model code. That certificate predates the ATX 3.1 revision of this unit by some margin, so it is describing an earlier configuration sharing the model number.

Acoustically, the cold run is the unit's best showing. The fan stays completely stopped up to nearly 300W, which is almost 40% of its maximum rating, comfortably wider than the 30% Phanteks claims. It will easily cover any system idling and even performing medium-power tasks as well. It comes on at 31.6 dB(A) and climbs gently, crossing 38 dB(A) only past 590W and topping out at 43.2 dB(A) at a sustained 750W. That is audible in a quiet room but not intrusive, and you have to be pushing a 750W load through a 750W supply to get there. Thermals are unremarkable but in a good way, with both the exhaust and internal temperatures well within the acceptable margins while the fan is largely idling. Nothing here is working hard.

Hot Test Results (~45°C Ambient)

Hot Test Results (~45°C Ambient)

Inside the hotbox at roughly 45°C (five degrees past the unit's own 40°C rating), efficiency degraded far less than we expected. The 230 VAC average fell from 91.0% to 90.3% and the full-load figure from 90.8% to 89.8%, a single point for a twenty-degree increase in ambient. At 115 VAC, the average went from 89.0% to 88.3%, with full load dropping to 86.5%, which does slip under the 80 PLUS Gold threshold. That threshold is defined at 23°C ambient, so what we have here is a note rather than a failure. Full-load losses rose from 69W to 76W. This is a better hotbox result than most mainstream Gold units manage, and it says something reassuring about the heatsink sizing and choice of components.

Phanteks  AMP GH 750W
Tom's Hardware
Phanteks  AMP GH 750W
Tom's Hardware
Phanteks  AMP GH 750W
Tom's Hardware
Phanteks  AMP GH 750W
Tom's Hardware
Phanteks  AMP GH 750W
Tom's Hardware

Heat makes little impact on the unit’s electrical performance, but noise is where it makes itself felt. The fanless window narrows from about 300W to roughly 220W, and from there the ramp is much steeper than it was at room temperature: 38 dB(A) at 450W, 46 dB(A) at 600W, and 50.2 dB(A) at a sustained 750W. That is loud, and the sleeve-bearing Yate Loon is working hard. The trade-off is that internal temperatures stay very well controlled, so the fan is doing real work rather than spinning for the sake of it, with the designer obviously favoring reliability over acoustics when ambient conditions are tense. Even though sustained full output in a 45°C environment is outside this unit's specifications, it handled it without complaint and without shutting down.

PSU Quality and Bottom Line

Power Supply Quality

Voltage regulation is the standout result of the whole test. Across the 20% to 100% load span, the 12V rail moved by just 0.4%, an enthusiast-tier tightness on a sub-$90 unit and better than several platforms costing twice as much. The 3.3V and 5V rails came in at 1.2% each, which is ordinary but perfectly fine given DC-DC conversion and the negligible loads modern systems put on them. There is no sign of the minor rails dragging the 12V line around under uneven loading.

Ripple suppression is equally comfortable. The 12V rail peaked at 38 mV under full load against the 120 mV ATX limit, leaving nearly 70% headroom, while the 3.3V and 5V rails topped out at 24 mV against their 50 mV limits. Nothing in this data set gets anywhere near a limit, with the Japanese capacitors on the secondary clearly backing their reputation.

During our thorough assessment, we evaluate the essential protection features of every power supply unit we review, including Over Current Protection (OCP), Over Voltage Protection (OVP), Over Power Protection (OPP), and Short Circuit Protection (SCP).

All protection mechanisms were verified and triggered correctly during testing. With the unit hot, OCP tripped at 150% on the 3.3V rail, 148% on the 5V rail, and 138% on the 12V rail. OPP shut the unit down at approximately 1050W, or 140% of rated output. Those are loose thresholds and generous enough that a genuine fault has room to develop before anything intervenes. However, these are not unusual for the ATX 3.1 class, and every protection engaged cleanly when it should have.

Main Output

Load (Watts)

150.89 W

376.35 W

563.58 W

750.68 W

Load (Percent)

20.12%

50.18%

75.14%

100.09%

Amperes

Volts

Amperes

Volts

Amperes

Volts

Amperes

Volts

3.3 V

1.81

3.40

4.53

3.38

6.80

3.37

9.07

3.36

5 V

1.81

5.07

4.53

5.05

6.80

5.03

9.07

5.01

12 V

11.25

12.05

28.11

12.03

42.17

12.01

56.23

12.00

Line

Regulation

Voltage Ripple (mV)

(20% to 100% load)

20% Load

50% Load

75% Load

100% Load

CL1
12V

CL2
3.3V + 5V

3.3V

1.2%

18

16

18

24

18

22

5V

1.2%

18

18

18

24

18

24

12V

0.4%

26

26

26

38

38

24

Bottom Line

The AMP GH 750 is a better PSU than its price implies at the time of this review, but the reasons are not the ones Phanteks leads with. Phanteks spent considerable effort and resources on the aesthetics of the unit, leading their marketing campaign with the appearance and quality of the wires. It is undeniable that the cables of this unit have been exceptionally well designed and made, with extreme attention to quality and detail. The same is true about the unit itself, the construction and appearance of which are immaculate and attractive.

Phanteks  AMP GH 750W

(Image credit: Tom's Hardware)

While unquestionably important, aesthetics can only take you so far when we are talking about any tech equipment. What makes the AMP GH 750 really worth buying is the bill of materials and the electrical results. Japanese capacitors throughout, amazing regulation on the 12V rail, and ripple that never gets within two-thirds of the ATX limit. Helly is not a famous name amongst enthusiast cycles, but this is a well-executed platform, and the 8-year warranty behind it looks like a considered commitment rather than a gamble.

Phanteks  AMP GH 750W

(Image credit: Tom's Hardware)

The measurements may look indifferent, but the results are honest. Efficiency clears 80 PLUS Gold at both input voltages and holds its curve well, but that level of performance is hardly stellar by today’s standards. Our numbers sit about one percentage point below the CLEAResult certification report on file for this model code, a report dated 2022, which predates the ATX 3.1 revision the unit ships as today. There are no Cybenetics or PLPP certifications at the time of this review. We feel that two things hold the AMP GH 750 back. The first is the 12V-2x6 connector's 450W rating. On a 750W unit, that is not fatal; anything you would sensibly pair with 750W stays under it, but anyone planning to move a heavier card into this system later will be facing a limit. The second is the fan. The Yate Loon D12SH-12 is a sleeve-bearing part that does not match the eight-year warranty's ambition.

Phanteks  AMP GH 750W

(Image credit: Tom's Hardware)

At $109.99 MSRP for the white unit and $99.99 for the black, and at the time of writing, $84.99 and $89.99 respectively at Newegg, both landing at $74.99 after Phanteks' mail-in rebate, the value case is straightforward. Under $80 buys you Japanese capacitors, near-flat 12V regulation, a 300W fanless window, and 8 years of warranty. The compromises are a connector limit you should check against your GPU plans, and a fan that will remind you it exists in a warm case. For a mid-range build that lives between 200W and 500W most of the time, which is exactly what a 750W supply is for, that is an easy recommendation.

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Montech Century II Gold 850W power supply review: Excellent budget-friendly Gold-tier ATX 3.1 unit with Cybenetics Platinum efficiency

7 September 2026 at 13:05

Montech is one of those brands that, despite a relatively recent international profile, traces its lineage back through the Taiwanese components industry to engineers with three-plus decades of experience. The company formally took shape in 2016 and entered Western retail channels around 2019, initially building its name on aggressively priced PC cases. From that beachhead, Montech expanded methodically into air and liquid coolers, fans, mechanical input devices, and, most relevant for this review, power supplies.

The original Century line positioned Montech at the value-conscious end of the PSU market. At the same time, the more recent Titan series advanced to premium territory by relying on Seasonic and CWT for its underlying platforms. The Century II line, refreshed for ATX 3.1 and PCIe 5.1 with native 12V-2x6 connectivity, sits between those bookends. It is meant to deliver modern-spec compliance and Gold-level efficiency at a price point that undercuts the established premium players by a meaningful margin. The 850W model is the entry point of the family, and today we examine whether it belongs among our list of best power supplies on the market.

Specifications and Design

Montech Century II Gold 850W ATX 3.1 Power specifications (Rated @ 40 °C)

RAIL

+3.3V

+5V

+12V

+5Vsb

-12V

MAX OUTPUT

20A

20A

70.8A

3A

0.3A

100W

100W

849.6W

15W

3.6W

TOTAL

850W

AC INPUT

100 - 240 VAC, 50 - 60 Hz

MSRP

$90

In the Box

The Century II 850W ships in a tidy cardboard box dressed in a charcoal/silver color scheme that attempts to mirror the unit's own finish. Montech leans hard on the dual certification story up front, with the 80Plus Gold and Cybenetics Platinum badges both printed prominently on the box face, alongside the ten-year warranty claim and references to the ATX 3.1 and PCIe 5.1 standards. Foam inserts protect the PSU itself.

Montech Century II Gold 850W ATX 3.1

(Image credit: Tom's Hardware)

Bundled accessories are beyond modest, especially for the price range of the unit. We found the AC power cable, a sleeve of mounting screws, a few reusable Velcro-style cable straps, a few cable ties, and a small user manual. At this price point, that is an unexpectedly good unboxing experience.

Montech Century II Gold 850W ATX 3.1

(Image credit: Tom's Hardware)

The cable bundle itself is all-black and entirely flat-ribbon in construction. The native 12V-2x6 cable is the highlight, rated at the full 600W of the connector standard. Buyers get two 6+2-pin PCIe cables carrying four connectors total, two EPS 8-pin runs for CPU power, two SATA chains with four connectors apiece, and a single Molex chain. The total connector count covers every realistic single-GPU configuration this PSU should be paired with, including current-generation cards with multiple PCIe inputs.

Montech Century II Gold 850W ATX 3.1

(Image credit: Tom's Hardware)
Montech Century II Gold 850W ATX 3.1

Connector type

Hardwired

Modular

ATX 24 Pin

-

1

EPS 4+4 Pin

-

-

EPS 8 Pin

-

2

PCI-E 5.1 (12V-2x6)

-

1

PCI-E 6+2 Pin

-

4

SATA

-

8

Molex

-

4

Floppy

-

-

External Appearance

At 160mm in length, the Century II 850W is a touch longer than the ATX guideline 140mm reference, though well within what any modern mid-tower will accept without complaint. Compact-case builders should double-check clearances before committing.

Montech Century II Gold 850W ATX 3.1

(Image credit: Tom's Hardware)

Visually, this is one of the most distinctive units in its class. Where the vast majority of competitors stick to plain black sheet metal, Montech has gone with a two-tone treatment: a matte silver top panel cut with a geometric triangular grille that looks like an architectural detail more than a fan vent, paired with a black chassis body. Both side panels carry a subtle, debossed angular pattern and the Century II wordmark, while a discrete "Montech" logo is along the bottom edge. The finish is clean, and the panel gaps are tight.

Montech Century II Gold 850W ATX 3.1
Tom's Hardware
Montech Century II Gold 850W ATX 3.1
Tom's Hardware

The rear face holds the AC receptacle and the primary on/off switch, plus a smaller secondary toggle that lets the user disable the hybrid mode and run the fan continuously if they prefer. That second switch is something Montech could easily have buried, and it is a small feature but one we are glad to see. At the front, we can only see the modular connectors with their silkscreened labels that clearly identify each socket. Connector keying makes mis-insertion practically impossible anyhow.

Montech Century II Gold 850W ATX 3.1
Tom's Hardware
Montech Century II Gold 850W ATX 3.1
Tom's Hardware

Internal Design

Cooling falls to a 135mm Hong Hua HA13525M12SF-Z fan, which uses a fluid-dynamic bearing engine. The model designation indicates a medium-speed variant rather than the higher-rated H-series spindle some premium Hong Hua models employ, but the maximum speed of 2000 RPM is very high. In practice, fluid-dynamic bearings are the right choice for a unit pitched for long service life, and the fan curve of this unit is calibrated conservatively enough.

Montech Century II Gold 850W ATX 3.1

(Image credit: Tom's Hardware)

The OEM is Shenzhen Xinweiye Technology Co., typically referred to as XWY. XWY is not as familiar a name as Seasonic, CWT, or Great Wall, but the company has been quietly supplying Montech's Century II family and a handful of other brands' mainstream ATX 3.x designs.

Montech Century II Gold 850W ATX 3.1
Tom's Hardware
Montech Century II Gold 850W ATX 3.1
Tom's Hardware

Filtering on the AC inlet PCB consists of four Y capacitors, two X capacitors, and two filtering inductors – a good, complete configuration for a unit at this wattage. The two bridge rectifiers sit on the large heatsink across the unit’s edge, sharing it with the APFC stage components. The APFC stage uses a typical inductor paired with two bulk capacitors mounted side by side, one from Rubycon and one from Nippon Chemi-Con, both branded for 105°C operation. These are two of the most reputable Japanese manufacturers, in line with Montech's marketing claim of 100% Japanese capacitors, although the products themselves are extremely unlikely to have been made in Japan nowadays.

Montech Century II Gold 850W ATX 3.1

(Image credit: Tom's Hardware)

The primary inversion stage topology is a half-bridge LLC with two PIP Semiconductor SPTA65R130FDD MOSFETs, entirely appropriate for the price point and well-proven at this output rating. The main transformer sits centrally on the board with gold tape insulation, dividing primary from secondary. The rectification stage on the secondary side is handled by six SPTJ04R014E MOSFETs operating in synchronous-rectifier mode. 3.3V and 5V is generated through typical DC-to-DC conversion, but unlike the commonly found vertical daughterboard, all components are on the main PCB.

Montech Century II Gold 850W ATX 3.1

(Image credit: Tom's Hardware)

Secondary-side electrolytics are predominantly TK-branded, which corresponds to the Japanese manufacturer Toshin Kogyo. TK is genuinely Japanese, which validates Montech's marketing copy, but enthusiasts should be aware that Toshin Kogyo is widely regarded as a second-tier domestic capacitor brand rather than a peer of Nippon Chemi-Con, Rubycon, or Nichicon. Then again, TK’s reputation is solidly higher than that of the manufacturers supplying the silicon of this unit. In practical terms, the unit should age perfectly well, but it is a tier below what the higher-end competition uses (and that is reflected in the price).

Montech Century II Gold 850W ATX 3.1

(Image credit: Tom's Hardware)

Cold Test Results (25°C Ambient)

Cold Test Results (25°C Ambient)

For the testing of PSUs, we are using high-precision electronic loads with a maximum power draw of 2700 Watts, a Rigol DS5042M 40 MHz oscilloscope, an Extech 380803 power analyzer, two high-precision UNI-T UT-325 digital thermometers, an Extech HD600 SPL meter, a self-designed hotbox, and various other bits and parts.

Montech Century II Gold 850W ATX 3.1
Tom's Hardware
Montech Century II Gold 850W ATX 3.1
Tom's Hardware
Montech Century II Gold 850W ATX 3.1
Tom's Hardware
Montech Century II Gold 850W ATX 3.1
Tom's Hardware
Montech Century II Gold 850W ATX 3.1
Tom's Hardware

At 115 VAC, the Century II 850W averaged 90.5% efficiency across the 10-100% load range during cold testing. At 230 VAC, the figure rose to 92.5%. Both numbers comfortably exceed the Cybenetics Gold threshold, with Cybenetics independently certifying the unit as Platinum across both input voltages. The unit holds 80Plus Gold certification under the 115V input voltage because it does not meet the 100% load efficiency requirement for the 80Plus Platinum badge, which is why Montech labels it Gold rather than Platinum on that scheme. The Cybenetics methodology, which considers the average efficiency rather than the four-point 80Plus protocol, reflects the platform's strengths more accurately. The efficiency curve peaks just below the 50% load mark and stays largely flat from there through the upper end of the range.

Fan behavior under cold conditions is adequately good. The smart fan mode keeps the rotor stationary at the lowest load points, and even after the fan begins spinning, the noise floor stays well under the threshold of audibility in a typical desktop environment. There is a ramp toward maximum output, but the fan does not approach anything resembling a high RPM during room-temperature testing. Internal temperatures climb predictably with load but remain well within the comfort zone of the components throughout.

Hot Test Results (~45°C Ambient)

Hot Test Results (~45°C Ambient)

Inside the hot box, the average efficiency at 115 VAC fell to 89.2%, while 230 VAC operation averaged 91.1%. The roughly 1.3-1.4 percentage-point degradation is not small but is in the expected range for a Gold-tier 850W design under sustained elevated ambient conditions. The unit shrugged off the thermal stress impressively, better than we thought it would after checking its parts.

Montech Century II Gold 850W ATX 3.1
Tom's Hardware
Montech Century II Gold 850W ATX 3.1
Tom's Hardware
Montech Century II Gold 850W ATX 3.1
Tom's Hardware
Montech Century II Gold 850W ATX 3.1
Tom's Hardware
Montech Century II Gold 850W ATX 3.1
Tom's Hardware

The fan ramp under hot conditions is, as expected, much steeper than under cold testing. The fanless operation threshold moves down, and the speed curve becomes more aggressive. The fan reached its maximum rated speed at maximum load. The heatsink temperatures we measured are fair, suggesting that the platform has a cooling margin but largely depends on its massive fan for cooling.

PSU Quality and Bottom Line

Power Supply Quality

Electrical performance is solid across the board. Voltage regulation sat at 0.4% on the 12V rail, 0.5% on the 5V rail, and 0.4% on the 3.3V rail across the 20-100% load range. Those numbers are well below the ATX specification recommendations and demonstrate that the unit is extremely well-tuned. They do not match the absolute best units we have tested, but they are firmly in exceptional territory for a Gold-class design.

Ripple suppression follows a similar pattern. At 100% load, the 12V rail peaked at 30 mV, the 5V at 24 mV, and the 3.3V at 22 mV. All of these figures sit well inside ATX limits (120 mV on 12V, 50 mV on the minor rails). They are not the cleanest numbers we have ever seen, but they are clean enough that system components will see a stable, quality power supply.

During our thorough assessment, we evaluate the essential protection features of every power supply unit we review, including Over Current Protection (OCP), Over Voltage Protection (OVP), Over Power Protection (OPP), and Short Circuit Protection (SCP).

All four protection mechanisms triggered correctly during our hot-box stress runs. OCP on the 3.3V and 5V rails sat at 154% and 150%, respectively, with the 12V triggering around 126% of its nominal rating. OPP triggered at approximately 124% of the 850W output during hot testing, which translates to roughly 1,050W of sustained delivery before the unit pulled the plug. That is a substantial cushion. The minor rails in particular carry far more headroom than the nameplate implies, and even the 12V rail tolerates well over its rated current before tripping.

Main Output

Load (Watts)

171.92 W

429.38 W

643.02 W

855.86 W

Load (Percent)

20.23%

50.52%

75.65%

100.69%

Amperes

Volts

Amperes

Volts

Amperes

Volts

Amperes

Volts

3.3 V

1.82

3.40

4.56

3.40

6.84

3.39

9.11

3.39

5 V

1.82

5.09

4.56

5.09

6.84

5.07

9.11

5.06

12 V

12.91

12.12

32.26

12.11

48.40

12.09

64.53

12.07

Line

Regulation

Voltage Ripple (mV)

(20% to 100% load)

20% Load

50% Load

75% Load

100% Load

CL1
12V

CL2
3.3V + 5V

3.3V

0.4%

14

16

20

22

16

22

5V

0.5%

16

16

22

24

16

22

12V

0.4%

12

20

26

30

28

20

Bottom Line

At its $90 pricing at the time of this review, the Century II 850W is one of the most aggressively priced ATX 3.1 units with a native 12V-2x6 connector and Cybenetics Platinum-equivalent efficiency on the market. Competition at that price point exists but is genuinely thin once you start filtering for fully modular, all-Japanese capacitor designs with a decade of warranty coverage. Especially at the $80 sale price that it reaches periodically, it becomes a borderline default recommendation for mid-range 5070-tier and 9070-tier builds.

Montech Century II Gold 850W ATX 3.1

(Image credit: Tom's Hardware)

The performance picture is a study in restraint. Voltage regulation and ripple suppression are not class-leading, but they surely are exceptional. Efficiency comfortably exceeds the Gold thresholds across almost all of the load range, easily granting the platform a Platinum certification badge when the average efficiency is the primary factor. Fan management is quiet, and the Smart Zero mode behaves the way the marketing claims.

Where the unit shows its budget positioning most clearly is in the platform and silicon. XWY is a less established OEM than Seasonic or CWT, much of the silicon comes from relatively unknown Chinese manufacturers, and TK secondary capacitors - while genuinely Japanese - are not Nippon Chemi-Con. None of these are problems per se but simply the cost-engineering decisions that make the $90 price possible. The 10-year warranty is the strongest signal that Montech itself expects the platform to age gracefully, and that warranty length is a meaningful feature, not marketing decoration.

Montech Century II Gold 850W ATX 3.1

(Image credit: Tom's Hardware)

Taken on its own terms, the Century II 850W ATX 3.1 unit is exactly the unit Montech intended to build: a no-nonsense, modern-spec, Gold-tier 850W power supply that does not try to compete with the premium tier on engineering pedigree, but does compete, and very effectively so, on overall value. It is the sort of PSU we expect to see in a lot of mainstream builds over the next few years, and there are worse fates than that for any product.

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British Security Coordination and the Limits of Allied Persuasion: How Foreign Partners Can Shape Strategy Through Clandestine Action

23 August 2026 at 14:14

At a time when NATO governments are scrambling to prove their usefulness to an American political movement that increasingly treats alliances as bad business deals, the history of British Security Coordination (BSC) carries an uncomfortable relevance. Long before social media campaigns, algorithmic targeting, and armies of online influencers, Britain operated a covert intelligence and persuasion apparatus from Rockefeller Center to convince Americans that Britain’s destruction would pose a threat to America. Directed by William Stephenson during the most dangerous years of World War II, BSC cultivated journalists, exposed Axis networks, encouraged anti-Nazi messaging, and strengthened interventionist arguments inside a country whose public was still wary of entanglement in another European war.

The operation never achieved the sweeping victory later attributed to it. BSC did not bring the United States into the war. Pearl Harbor did. Japan’s attack on December 7, 1941, followed by Nazi Germany’s declaration of war four days later, supplied the shock that transformed public opinion, destroyed the political viability of continued neutrality, fatally undercut the prevailing isolationist position, and made American entry inevitable. BSC’s impact was earlier and in a less dramatic form. It helped shape the political and informational environment in which Americans interpreted the Axis threat, made interventionist arguments more familiar, supported domestic advocates of aid to Britain, and narrowed the distance between defending Britain and defending the United States.

BSC can serve as a case study in both the potential and the limits of allied persuasion. Foreign influence rarely creates a strategic reversal where no domestic interest or political constituency supports one. It can prepare the ground, furnish leaders with usable arguments, strengthen sympathetic networks, expose the costs of inaction, and make a later decision easier when events force the issue. The same question now confronts allies seeking to preserve American commitments under the Trump administration and other populist governments: can they translate alliances into the language of sovereignty, jobs, industrial power, burden-sharing, China containment, border security, energy resilience, and national advantage, or has the modern political environment made the Stephenson model obsolete?

Selling Britain’s Survival as America’s Security

British Security Coordination has been remembered as a remarkable intelligence organization, but collection was only one component of its mission. At its core, BSC represented an exercise in strategic persuasion. Churchill understood that Britain could not defeat Nazi Germany alone and that American industrial production, financial backing, and eventually military power would determine the outcome of the war. The immediate challenge involved gradually shifting the broader political environment in which Roosevelt operated. A president sympathetic to intervention remained constrained by an electorate still traumatized by World War I, an influential isolationist movement, and a Congress responsive to both.

The genius of BSC lies in its recognition that foreign governments are rarely persuasive when they openly advocate for their own interests. Americans already understood why Britain wanted American assistance. Such arguments naturally appeared self-serving and risked reinforcing precisely the suspicions isolationists had cultivated for decades, namely that European powers habitually sought to drag the United States into their wars. Stephenson sought to blur the distinction between Britain’s interests and America’s by promoting the argument that Britain’s defeat would fundamentally alter the balance of power in ways that would eventually threaten the United States itself. German domination of Europe would place hostile naval forces in the Atlantic, undermine hemispheric security, jeopardize American trade, destabilize global finance, and leave America alone to contend with an emboldened Axis.

This may appear obvious in retrospect, but in 1940, the message competed against a deeply rooted belief that geography, existing between the Atlantic and Pacific Oceans, would continue to provide the United States with almost unlimited security. BSC, therefore, had to persuade Americans that changes in warfare and economics had fundamentally altered the strategic assumptions undergirding American isolationism.

To accomplish this objective, Stephenson relied on indirect forms of persuasion because overt government messaging would have attracted immediate scrutiny and likely provoked a nationalist backlash. BSC concentrated on building relationships inside institutions that Americans already trusted. Journalists occupied a particularly important place within that strategy. British officers cultivated editors, correspondents, publishers, broadcasters, and opinion writers to emphasize Britain’s military resilience, Nazi aggression, and the growing strategic consequences of European developments for American security. Arguments carried by respected American publications possessed an authenticity that British diplomatic statements could never achieve.

The organization simultaneously pursued an equally important and less visible mission by identifying and exposing Axis intelligence networks operating throughout North and South America. German espionage involved military intelligence collection, commercial contacts, sympathetic political and social organizations, business relationships, and propaganda outlets. By uncovering these activities and discreetly sharing intelligence with American authorities, BSC helped transform abstract warnings about Nazi subversion into concrete security concerns. Every successful counterintelligence operation reinforced the broader argument that the United States already occupied the frontline of an undeclared conflict, whether it acknowledged that reality or not.

BSC’s activities also extended into the murkier world of political warfare. The organization established front organizations, financed publications, produced black propaganda, circulated forged documents designed to undermine Axis credibility, and conducted influence operations whose precise details remain debated by historians. Some operations undoubtedly crossed ethical lines and remain controversial. Others resembled ordinary intelligence tradecraft employed by nearly every major power during wartime. The broader significance rests upon the cumulative strategy they supported. Stephenson understood that persuasion rarely depends upon a single dramatic revelation. Political environments change gradually as numerous reinforcing signals begin pointing toward the same conclusion.

Equally significant was BSC’s understanding of messenger credibility. Modern discussions of influence often focus on messages while neglecting who delivers them, even though audiences frequently judge information by the source. Americans suspicious of a British speaker would be more inclined to hear the same message from an American journalist, military officer, academic, clergy, or elected official. BSC, therefore, strengthened American voices already reaching similar conclusions rather than relying on overt British advocacy. In contemporary language, those intermediaries served as force multipliers.

This approach reflected a broader understanding of democratic politics. Public opinion seldom changes because citizens suddenly adopt foreign priorities; it changes as domestic debates evolve until new conclusions appear consistent with national interests. Stephenson, therefore, framed intervention through national defense, economic stability, maritime security, industrial production, and shared democratic values. Moral arguments retained importance, particularly as reports of Nazi atrocities reached American audiences, but gained greater force when tied to concrete questions of American security. Britain’s survival increasingly appeared intertwined with America’s own long-term security.

Perhaps the organization’s greatest strategic insight was that political persuasion resembles investment more than an immediate transaction. BSC could not predict which crisis would force a decision, but it could shape the intellectual landscape through which Americans would interpret that crisis. Its purpose was to ensure that later events would be understood through an established framework linking British survival to American security.

Pearl Harbor Made the Decision

The mythology surrounding British Security Coordination has often obscured its genuine historical significance. Popular accounts sometimes portray Stephenson’s organization as the hidden force that drew the United States into World War II, suggesting that a sophisticated intelligence operation succeeded where diplomacy and public argument had failed. That interpretation attributes far greater influence to covert action than the historical record supports. Pearl Harbor transformed American public opinion and political calculations in ways no foreign influence campaign could have achieved. BSC prepared the political terrain upon which that transformation occurred, yet the strategic earthquake itself came from Japan.

By late 1941, Roosevelt had already moved the United States substantially closer to Britain. The Destroyers for Bases Deal and Lend-Lease had become law, 50 decommissioned American destroyers were safeguarding British shipping in the Atlantic, American factories had begun supplying enormous quantities of supplies, and the US Navy was already escorting convoys through a large swath of the Atlantic as far as Iceland.

American factories were supplying enormous quantities of military equipment, the destroyers-for-bases agreement had strengthened Britain’s Atlantic defenses, and the U.S. Navy had begun escorting convoys through large sections of the Atlantic, as far as Iceland. American and British intelligence cooperation had expanded rapidly, military planning increasingly assumed eventual collaboration, and Roosevelt steadily stretched the limits of neutrality without formally abandoning it. Each of these measures generated fierce political debate, demonstrating that support for Britain had grown significantly while public opinion remained divided over direct participation in the war.

Opinion polling during 1940 and 1941 revealed a pattern that often disappears in hindsight. Americans increasingly favored providing Britain with weapons, financial assistance, and material support because many concluded that a British defeat would ultimately threaten American security. That same electorate remained reluctant to send American soldiers into another European war. The distinction between aiding Britain and becoming a belligerent remained politically meaningful until the very end of American neutrality.

Pearl Harbor eliminated that distinction within hours. Japan’s attack transformed a distant geopolitical debate into an immediate national emergency. The attack united constituencies that had spent years disagreeing over intervention, redirected public anger toward the Axis powers, and supplied Roosevelt with overwhelming congressional and popular support for war. Germany’s declaration of war four days later completed the strategic transformation by linking the European and Pacific theaters into a single conflict for the American public.

No foreign intelligence service possessed the capacity to manufacture such a moment. Even the most sophisticated influence campaign could not replicate the emotional, psychological, and political consequences of thousands of American casualties, the destruction of much of the Pacific Fleet, and the unmistakable realization that the United States itself had become the target of military aggression. Pearl Harbor resolved debates that had persisted for years because it fundamentally altered the facts upon which those debates rested.

That conclusion clarifies rather than diminishes BSC’s importance. By December 1941, arguments connecting Britain’s survival with American security, emphasizing Axis ambitions, exposing German espionage, and questioning the protection of geographic distance had already entered mainstream political discussion. BSC’s cumulative effect was to make those ideas familiar before Pearl Harbor changed the strategic environment.

BSC therefore succeeded in ways that prove difficult to measure through conventional historical benchmarks. It did not produce a single decisive speech, one transformative publication, or one covert operation that permanently shifted American policy. Its achievements accumulated gradually across journalism, intelligence cooperation, elite networks, political discussion, and public understanding of European events. The cumulative effect narrowed the distance between supporting Britain and defending American interests. When Pearl Harbor fundamentally changed the strategic environment, those arguments required remarkably little adaptation because they had already become familiar to much of the political establishment.

Roosevelt remained the principal architect of American policy. His public case emphasized American security, Atlantic defense, industrial mobilization, and the consequences of allowing authoritarian powers to dominate Eurasia—arguments that overlapped with themes BSC reinforced through unofficial channels. British influence functioned as an amplifier, giving domestic leaders additional evidence and language while leaving political ownership with Roosevelt, Congress, and American voters.

These limits extend beyond World War II. Elections, legislatures, media scrutiny, competing interest groups, and public opinion prevent outside actors from redirecting democratic strategy at will. Effective allied influence instead prepares conditions under which future decisions become easier to justify when events create political opportunities.

Allied Actions That Built Trust and Political Support

BSC was distinctive in scale, but its underlying approach was not unique. Governments have repeatedly sought to shape partners whose cooperation they considered essential. Such campaigns worked best when they reinforced developments already underway rather than attempting to create new political realities. Allied persuasion has therefore usually functioned as a force multiplier, not an independent engine of policy change.

The most obvious historical comparison predates BSC by nearly a quarter-century. In January 1917, British cryptanalysts intercepted and deciphered the Zimmermann Telegram, in which German Foreign Secretary Arthur Zimmermann instructed his ambassador in Mexico to propose a military alliance should the United States enter World War I. Germany promised the Mexican recovery of Texas, New Mexico, and Arizona in exchange for opening a southern front against the United States. The message represented an extraordinary intelligence success, yet the interception itself did not guarantee political impact. Britain had to decide whether to reveal the telegram, how to authenticate it without exposing its codebreaking capabilities, and when its publication would carry maximum credibility.

London handled the disclosure with remarkable care. The telegram reached American newspapers at a moment when unrestricted German submarine warfare had already begun threatening American shipping and commercial interests. Public outrage, therefore, emerged from two reinforcing developments rather than a single revelation. The telegram demonstrated hostile German intentions toward the United States while submarine attacks showed Germany’s willingness to translate those intentions into action. Wilson still required congressional approval for war, and public opinion still evolved through domestic debate, yet Britain’s intelligence disclosure significantly strengthened interventionist arguments already gaining momentum.

The Zimmermann episode illustrates an important feature of successful allied influence. Intelligence rarely changes policy because of its novelty alone. Its greatest impact comes from confirming fears already developing inside the target country’s political system. Had the telegram appeared several years earlier, before submarine warfare transformed American perceptions of Germany, its effect would almost certainly have been weaker. Timing amplified its significance because British intelligence understood how the disclosure fit within an evolving political environment.

British Security Coordination also belongs within a broader history of allied governments seeking to influence the political decisions of friendly powers through covert means rather than open diplomacy. During World War I, France quietly financed and supported extensive information and lobbying efforts in the United States designed to strengthen pro-Allied sentiment among journalists, publishers, academics, civic organizations, and business leaders. French diplomats worked closely with private advocacy groups, cultural institutions, and influential Americans to portray the conflict as a direct challenge to American commercial interests and long-term security rather than merely a European struggle. These efforts did not bring the United States into the war, yet they helped reinforce an intellectual climate in which closer American engagement became progressively easier to defend as German actions intensified.

The early Cold War generated an even broader range of allied influence efforts. Western European governments devoted enormous energy to convincing successive American administrations that maintaining substantial military forces in Europe served American interests as much as European security. Rather than asking Washington directly to defend Europe, they emphasized Soviet conventional superiority, the economic importance of European recovery, the value of forward deployment for deterrence, the protection of Atlantic trade partners, and the geopolitical consequences of allowing Moscow to dominate the continent. American policymakers accepted these arguments because they aligned with Washington’s emerging strategy of containing the expansion of Soviet communism. European diplomacy, therefore, reinforced priorities already developing inside the United States instead of attempting to redirect American grand strategy altogether.

The creation of NATO reflected this dynamic. European governments lobbied for formal American security guarantees, yet the alliance became politically sustainable because Truman and his advisers concluded that preventing Soviet domination of Western Europe directly enhanced American security. Foreign and domestic interests converged around the same strategic conclusion. The alliance emerged from shared interests that foreign persuasion helped articulate, organize, and institutionalize, but the American electorate had the final say.

A more contemporary example emerged during the final years of the Cold War, when the Polish Solidarity movement and its supporters quietly cultivated influential political, labor, religious, and media networks across Western Europe and the United States. The campaign depended upon clandestine communications, covert financial support, underground publications, émigré organizations, and carefully managed relationships with Western opinion leaders. Rather than attempting to persuade governments directly, Solidarity encouraged respected domestic constituencies to frame support for Poland’s democratic opposition as consistent with their own political traditions and strategic interests. Western assistance ultimately reflected far broader geopolitical forces, yet the movement’s success in mobilizing influential voices abroad helped sustain political commitment over many years. Like British Security Coordination, the operation demonstrated that foreign influence becomes most effective when it strengthens existing domestic coalitions, equips trusted intermediaries with credible information, and allows the resulting political argument to appear homegrown rather than orchestrated from abroad.

Israeli diplomacy provides another revealing comparison. Since the 1960s, successive Israeli governments have invested heavily in persuading American policymakers, legislators, journalists, academics, and civil society leaders that Israeli security contributes directly to American interests in the Middle East. Intelligence cooperation, joint military development, congressional trips, think tank events, academic exchanges, business partnerships, and technological developments all represent channels advancing the proposition that Israel advances American interests. These efforts have enjoyed considerable success across multiple administrations because they consistently tied Israeli priorities to American priorities, including security, technological innovation, liberal democratic values, counterterrorism, and regional stability. Even periods of disagreement rarely disrupted the broader institutional relationship because decades of cooperation had already embedded shared assumptions throughout both governments.

Failures are also instructive. During the Cold War, the Soviet Union devoted enormous resources to what it called “active measures,” entailing covert funding, forged or fabricated documents, front organizations, media manipulation, and disinformation campaigns. Moscow occasionally succeeded in amplifying existing political divisions or encouraging anti-American narratives abroad. It achieved far less success in persuading Americans that Soviet geopolitical objectives advanced American national interests. The campaigns frequently relied upon ideological appeals disconnected from the priorities of mainstream American voters, making them vulnerable whenever their foreign origins were exposed.

Across these cases, governments achieved more durable results when they framed cooperation in terms of shared security, prosperity, technology, industrial capacity, or common threats rather than sentiment or moral obligation alone. Foreign influence was most effective when it helped define domestic interests, supplied evidence, and gave leaders language capable of surviving political scrutiny.

These examples place BSC within a broader tradition of statecraft. Its scale and wartime setting were exceptional, but its premise was familiar: military coalitions endure only when members continually persuade one another that cooperation advances their own security. BSC was one chapter in that longer history of allies shaping strategic horizons before events forced irreversible choices.

The Anatomy of Persuasion

The historical cases suggest five recurring conditions for effective persuasion. First, the appeal must align with interests already valued inside the target country and translate them into politically usable language. Governments may sometimes act from moral conviction, but they sustain major commitments through national security, economic prosperity, political stability, and military advantage. BSC presented Britain’s survival not as a charitable obligation but as a prerequisite for American security. Roosevelt could defend aid from a thoroughly American, practical, and philosophical position of strength.

Second, the messenger matters as much as the message. Foreign officials naturally appear to speak for their own governments, while fellow Americans possess authenticity. The same principle extends beyond the media. Universities, think tanks, professional associations, intelligence services, defense industries, and business communities shape the assumptions through which policymakers interpret events and provide networks that leaders consult when crises emerge.

Third, timing determines whether those arguments are available when political conditions change. Governments seldom revise grand strategy during periods of stability, and external shocks create brief opportunities for reassessment. Influence, therefore, generates much of its value before a crisis, when it can establish explanations that later events make credible. BSC spent more than a year reinforcing the idea that Nazi expansion formed part of a wider threat to American security. When Pearl Harbor produced immediate uncertainty and fear, Americans did not have to construct an entirely new framework; they had already encountered arguments explaining the cost of inaction in the fact of Axis aggression and now had an attack on fellow Americans and on American soil, just as the pro-British voices had warned.

Fourth, durable influence rests on institutional continuity and domestic ownership. Intelligence partnerships, military exchanges, academic cooperation, commercial investment, and professional networks can survive electoral change and create reservoirs of trust for future leaders. Foreign partners may supply intelligence, analysis, investment, and practical proposals, but democratic governments must integrate them into agendas that voters regard as national choices. Economic benefits help sustain that ownership. Employment, industrial production, technological innovation, infrastructure, and commercial opportunity connect strategic commitments to visible domestic gains and make cooperation easier to defend across changes in administration.

Finally, influence is cumulative and vulnerable to overreach. It loses effectiveness when it appears patronizing, secretive, detached from local priorities, or dependent on historical friendship and moral obligation alone. Foreign governments also weaken their case when they overestimate their popularity or assume that repetition alone can overcome deeply rooted structural resistance. No single intelligence disclosure, newspaper article, or diplomatic initiative usually transforms policy independently. Strategic change develops through institutional reinforcement, elite consensus, public familiarity, and gradual shifts in political language. BSC’s achievement was not a dramatic act of manipulation, but the slower work of shaping the conversation before history made the decision unavoidable.

Selling Alliances to America First: Could a Modern BSC Work?

The argument over America’s alliances has returned with a force that would have been familiar to the generation that watched Europe collapse in 1940. Donald Trump brought skepticism toward NATO, foreign aid, and overseas military commitments into the center of presidential politics, drawing support from voters who believed that Washington had spent too freely abroad while neglecting the perception (albeit a false one) of industrial decline, the real issue of lax border policies, and economic ennui at home. Any ally seeking to preserve American commitments under those conditions will confront a problem much like the one Britain faced before Pearl Harbor: how to show that assistance to other countries serves the United States and contributes to the security and prosperity of American citizens.

Stephenson could not rest Britain’s appeal on sympathy, historical memory, or references to a shared civilization. His campaign worked because it translated Britain’s survival into a matter of American self-preservation and carried that argument consistently into public debate. A modern effort would require the same translation across a more fragmented political landscape, where different communities respond to different forms of evidence and different messengers.

An appeal to NATO’s history carries limited force with a populist administration. It is easier to make the case when the alliance is connected to American factories, shipyards, ports, and energy terminals, where allied spending already supports production that the Pentagon may later need during a crisis. European purchases of American aircraft, missiles, munitions, communications systems, and other military equipment sustain specialized workers and suppliers. When those economic ties are made visible, NATO becomes easier to defend as part of the country’s industrial strength, military readiness, and capacity to replenish weapons during a prolonged conflict.

The argument also becomes more persuasive when placed within the larger competition with China. A Europe capable of carrying more of its own defense burden gives Washington greater freedom in the Indo-Pacific and reduces the risk that simultaneous crises will exhaust American forces. Cooperation on semiconductors, critical minerals, secure communications, advanced manufacturing, port infrastructure, and vulnerable supply chains can also limit Beijing’s ability to exploit economic dependence or divide allied markets. For a political movement that already regards Chinese power as a direct threat to American prosperity and security, the connection between European defense and competition in Asia can make NATO appear less like an inherited obligation and more like an instrument of American power.

Energy offers another route because it joins security with commerce in a form that voters can recognize. Europe’s movement away from Russian supplies has enlarged markets for American liquefied natural gas and encouraged investment in ports, storage facilities, shipping, and related infrastructure. The protection of sea lanes helps American exporters as surely as it helps European consumers, while closer energy cooperation reduces the ability of hostile states to use fuel supplies as a political weapon and cash cow to finance aggression. Presented in those terms, the alliance becomes part of the country’s economic security and supports industries whose importance extends well beyond foreign policy debates.

The same reasoning reaches into domestic law enforcement. Terrorist financing, smuggling, cybercrime, narcotics trafficking, document fraud, and sanctions evasion move across borders with little regard for the institutional divisions between foreign policy and homeland security. European services often encounter parts of these networks before they reach the United States, and close intelligence cooperation can expose financial ties, travel routes, procurement chains, and criminal intermediaries that no single government could trace alone. Such work gives an old alliance a direct role in protecting Americans from dangers they already recognize and allows cooperation abroad to be understood through the needs of security at home.

Foreign investment can make the connection visible at the local level, where arguments about alliances often remain abstract. Allied companies employ American workers, support regional suppliers, fund research, and support millions of jobs. F-16s from South Caroline, artillery shells from Pennsylvania, JDAMS from St. Louis, helicopters from Connecticut, energy flowing from a terminal in Texas, all carry more political weight than a multilateral summit declaration from Brussels because local communities can see the financial impact in jobs and tax revenue. The challenge is to contextualize lest it be forgotten that the “arsenal of democracy” wouldn’t exist without purpose and partnerships.

Arguments of this kind have circulated for years, yet repetition alone has done little to secure durable support. Stephenson’s achievement came from his ability to cultivate relationships inside American society and provide useful information to people already inclined toward closer cooperation with Britain. He worked through journalists, officials, business figures, and civic networks who could make the argument in their own name and adapt it to the concerns of their audiences.

The task is far more difficult now than it was in 1940. Stephenson dealt with a country whose public conversation passed through a relatively small number of newspapers, magazines, radio networks, and prominent commentators. Contemporary America is fractured across many separate political worlds, each shaped by different media figures, regional interests, and habits of trust. A governor may carry more weight than a diplomat, a veteran may be more convincing than a scholar, and a local business owner may reach people who would ignore a national columnist. No single argument can reach all of these audiences with equal force, and no national campaign can assume that the same evidence will persuade communities whose interests and fears differ so sharply.

The geography of persuasion, therefore, deserves close attention. Communities tied to defense production will view NATO through employment, procurement, and the survival of local industry, while energy-producing regions may care more about exports, ports, and pipeline security. Border states and law-enforcement networks may respond more readily to intelligence cooperation against trafficking and organized crime, while technology firms and manufacturers may focus on Chinese industrial espionage and legal and illegal strategies to cause dependence on vulnerable supply chains. An ally seeking influence would need to understand these differences and work through concerns that already exist within each place, rather than expecting a single national argument to carry the entire burden.

Digital tools make such precision easier while also increasing the danger of exposure. Governments and private firms can identify narrow audiences, study patterns of opinion, and place information before selected groups with extraordinary accuracy. Journalists, cybersecurity researchers, and political opponents can also trace coordinated activity, expose hidden sponsorship, and reconstruct the movement of money and information. A covert campaign that became public could discredit the alliance itself and confirm the suspicions of voters already wary of foreign interference, particularly when those voters believe that national institutions have grown too responsive to outside pressure.

Legal restrictions create another obstacle because foreign lobbying, campaign finance, online advertising, election activity, and undisclosed advocacy now attract intense scrutiny. Wartime methods once tolerated under emergency conditions could carry serious consequences in a contemporary democracy, where even lawful influence can become politically toxic if it appears secretive or manipulative.

A quieter, clandestine role remains possible, although it would need to be narrower and more carefully controlled than the operations Stephenson supervised. The risk of enemy exposure is too great. Allied services could gather and share evidence concerning Russian sabotage, Chinese economic penetration, cyber threats, illicit procurement, terrorist financing, and organized crime. American officials, journalists, and researchers could then assess that material and decide how to use it within their own institutions. This approach would preserve American control over the argument while allowing friendly foreign intelligence to strengthen joint efforts with evidence unavailable through ordinary public debate.

Distrust remains the greatest obstacle because populist movements often treat agreement among foreign policy elites as proof that the system is self-serving. Visible pressure from allied governments can make an otherwise sensible policy appear suspect, particularly when it seems coordinated with institutions that many voters already distrust. An ally that speaks too loudly may damage its own cause, while a campaign that relies too heavily on secrecy may confirm fears of manipulation. Influence is more likely to succeed when Americans conclude their own political experience and through people whose loyalty they do not question.

BSC still offers a useful lesson because Stephenson understood that Britain’s interests would gain force only after they became inseparable from America’s. A modern allied campaign would have to show, with evidence and persistence, that NATO strengthens American industry, protects the country’s energy position, supports homeland security, and gives Washington greater freedom to counter China, Russia, and Iran. Its success would depend on relationships built long before the next crisis, benefits visible enough to survive changes in administration, and a degree of trust that cannot be created through slogans or purchased through advertising.

Preparing the Ground Before History Decides

The enduring significance of BSC lies in recognizing that the key to success is the slow work of influencing Americans to understand that a given policy is an expression of their own interests. Governments often devote enormous attention to managing crises while investing far less in shaping the political conditions that determine how those crises will later be understood. The decisive advantage frequently belongs to those who recognize that strategic relationships are built gradually through countless individual decisions made by businesses, universities, military institutions, intelligence services, legislators, and civil society long before presidents and prime ministers are forced to make historic choices.

That observation carries particular relevance for an era of political polarization and increasingly transactional foreign policy. Alliances will be judged less by their history than by their continuing ability to adapt to changing domestic priorities. Those that remain flexible, generate new constituencies, and demonstrate value in changing economic and security environments are likely to endure. Those who rely primarily on past achievements or institutional inertia may discover that history alone is rarely enough to sustain political commitment across generations.

Irina Tsukerman is an American lawyer and analyst based in New York. She has written extensively about foreign policy and security issues for several think tanks, and frequently provides insights as a subject matter expert for various U.S. and international media outlets. 

US boosts drone surveillance as flesh-eating screwworms spread in Texas

12 August 2026 at 20:40

Hundreds of US government drones have switched from border surveillance to a different surveillance mission this summer—looking for signs of screwworm infestations in wild animals and livestock herds.

The flesh-eating New World Screwworm is the parasitic larva that emerges from eggs laid by flies in the open wounds or body openings of warm-blooded animals and humans, with untreated cases potentially leading to severe injury or death. Since the first screwworm cases were detected in South Texas in June, the US Department of Agriculture and US Customs and Border Protection have been conducting “one of the most extensive animal-health surveillance operations in the country,” the USDA said on August 10 in social media posts on platforms like X and Facebook.

The effort involves at least 200 drones owned by the Department of Homeland Security, which includes the Customs and Border Protection (CBP) agency. But the actual number in use "varies depending on availability and need," a USDA spokesperson told Ars.

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© US Department of Agriculture

Which Families Pay Most for Neonatal Intensive Care? Analyzing NICU Out-of-Pocket Costs

11 August 2026 at 14:06

The price of saving a newborn’s life can extend far beyond the hospital walls. A new analysis published in the Journal of Perinatology is drawing attention to a largely invisible consequence of neonatal intensive care: the direct medical out-of-pocket costs paid by families. The study, led by researchers Gorka, Profit and Phibbs, examines who carries the greatest financial burden during a neonatal intensive care unit admission and investigates how structural conditions may shape those costs.

Neonatal intensive care is among the most technologically advanced forms of medicine. Infants in NICUs may require mechanical ventilation, incubators that regulate temperature and humidity, continuous heart and oxygen monitoring, intravenous nutrition, specialized medications and repeated laboratory testing. These interventions can be lifesaving, particularly for babies born extremely prematurely or with serious medical complications. Yet the financial consequences of receiving this care are not experienced equally by every household, even when families receive treatment in the same health-care system.

The researchers’ focus is direct medical out-of-pocket spending: the money families must pay themselves for medical services connected to a NICU admission. This can include deductibles, copayments, coinsurance and other forms of cost sharing that remain after insurance has paid its portion. Unlike the total hospital charge or the amount reimbursed by an insurer, out-of-pocket cost reflects the portion that reaches a family’s own budget. For households already coping with an unexpected high-risk birth, even relatively small individual charges can accumulate rapidly.

The study is designed not only to document these expenses, but also to explore the structural forces behind differences in cost burden. In health economics, structural contributions refer to the way institutions and systems distribute risk and resources. Insurance design, employment-linked coverage, household income, geographic location, hospital characteristics and access to public assistance can all affect how much a family ultimately pays. Two infants with similar clinical needs may therefore generate very different financial experiences for their parents, depending on the architecture of coverage surrounding them.

That distinction matters because the effects of a NICU admission are not limited to the newborn’s medical condition. Parents may need to travel long distances to reach a specialized hospital, arrange accommodation near the facility, pay for transportation or meals, and take unpaid leave from work. These expenses may not always appear in estimates of direct medical out-of-pocket costs, but they can intensify the economic shock associated with a prolonged admission. The medical bill is only one component of the broader financial strain that can accompany neonatal illness.

A central question raised by the analysis is whether the families with the fewest financial resources are also the ones most exposed to high cost sharing. A payment that is manageable for a high-income household may consume a substantial share of a lower-income family’s monthly budget. Economists often describe this pattern as a disproportionate cost burden: the absolute amount paid may not be the highest, yet the payment represents a greater fraction of household resources. This distinction can reveal inequities that remain hidden when researchers look only at average dollar amounts.

The findings are expected to be relevant to health-policy debates about medical debt, insurance protection and the financial consequences of premature birth. If structural factors account for meaningful differences in family payments, reducing inequality may require more than improving clinical care. Potential responses could include limits on neonatal cost sharing, stronger protections against unexpected bills, expanded eligibility for public coverage and assistance with transportation or family support services. The analysis may also help hospitals and policymakers identify families at risk of financial hardship while an infant is still receiving care.

The issue has significance beyond individual hospitalizations because NICU care can influence a family’s financial stability long after discharge. Parents may face follow-up appointments, medications, developmental assessments and specialist care for children who experienced complications of prematurity or serious illness. Medical expenses can overlap with reduced work hours, job loss or the need for one parent to become a full-time caregiver. A short period of intensive treatment can therefore produce a long economic aftershock, particularly when families lack savings or paid leave.

By placing family payments at the center of neonatal research, Gorka, Profit and Phibbs emphasize a dimension of NICU care that is often absent from clinical success measures. Survival, complications and length of stay remain essential indicators, but they do not fully describe the experience of families navigating intensive care. Understanding who pays the most, why they pay it and how those payments relate to broader social structures could help redefine quality in neonatal medicine. The study’s message is potentially viral because it connects cutting-edge life-saving technology with a simple but consequential question: when medicine saves a baby, how much of the cost is left for the family to survive?

Subject of Research: Direct medical out-of-pocket costs of neonatal intensive care admissions and structural factors contributing to differences in financial burden among NICU families.

Article Title: Who pays the most for neonatal intensive care? An analysis of the out-of-pocket cost burden borne by NICU families

Article References: Gorka, N., Profit, J. & Phibbs, C.S. “Who pays the most for neonatal intensive care? An analysis of the out-of-pocket cost burden borne by NICU families.” Journal of Perinatology (2026). https://doi.org/10.1038/s41372-026-02869-6

Image Credits: AI Generated

DOI: 10.1038/s41372-026-02869-6

Keywords: neonatal intensive care, NICU, out-of-pocket costs, medical expenses, health-care inequality, premature birth, financial burden, insurance, neonatal health, health policy

Scientists Are Turning Empty Roadsides Into Butterfly Habitats

Asclepius Humistrata SproutingThousands of native milkweeds are transforming North Florida roadsides into experimental pollinator corridors. Along rural two-lane highways in North Florida, newly installed signs now identify grassy roadside slopes as wildflower areas. At this time of year, the labels may seem unnecessary. Thousands of milkweed plants are already producing dense clusters of five-sided buds and open [...]

Dragonflies maneuver like fighter pilots

Credit: Samuel T. Fabian et al., 2026

Male dragonflies are known to engage in mid-air "dogfights" to defend their breeding territory, using different maneuvers than those they employ when hunting prey. A new paper published in the Journal of the Royal Society Interface concluded that relatively simple rules drive that behavior, namely that male dragonflies are trying to maintain a tactical position. This mirrors the tactics of human fighter pilots. The research could lead to the development of smarter drones capable of navigating with simple, vision-based guidance rather than complex computation.

Classic pursuits involving prey or mating rituals are asymmetric: there is a chaser and an evader, with each role requiring different maneuvers. In the case of male-on-male interactions, however, it is more of a mutual pursuit, per the authors, who thought that studying flight trajectories of insects or raptors could yield useful insights into the guidance laws that underlie the behavior. They chose the Trithemis Aurora species of dragonfly for study because the males are "fiercely territorial," and there are usually multiple males around a given pond, intent on defending their chosen perches. The dragonflies are also crimson-colored, making them easier to track.

Much of the prior research on dragonfly interactions relied on visual observations or single-camera recordings. For this study, the authors set up a portable stereovideographic rig with two shutter-synchronized cameras to record dragonfly interactions in both color and monochrome, and then reconstructed 102 paired male-on-male flight trajectories to capture the 3D kinematics. They also reconstructed nine trajectories for dragonflies intercepting prey for comparative purposes. This enabled the authors to develop a model for the rules governing the flight behavior.

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A Slowly Aging Butterfly Could Help Scientists Understand Longevity

26 June 2026 at 13:25

A butterfly that survives for nearly a year, while its closest relatives live only two weeks, offers a potential model for studying how aging and lifespan can evolve in nature.

A University of Bristol-led study published in Nature Communications reports that some Heliconius butterflies have evolved both longer lifespans and slower physical decline, distinguishing them from most other butterfly species studied to date.

Heliconius butterflies inhabit the rainforests of Central and South America, where most adult butterflies live only a few weeks. In the study, Heliconius hewitsoni reached a maximum lifespan of 348 days, while a related species, Dione juno, only survived about 14 days under observed conditions. This represents a 25-fold difference in maximum lifespan between two closely related species.

Old Age Without the Decline

Heliconius butterflies not only live longer than their relatives, but also show slower physical decline with age. The team, in collaboration with the Smithsonian Tropical Research Institute in Panama, measured grip strength in aging butterflies to assess physical decline. Older Heliconius hecale performed as well as the younger individuals tested, showing no detectable age-related decline in grip strength.

The team combined butterfly house data, mark–recapture field studies, and controlled lab experiments. In these cases, Heliconius butterflies consistently showed longer lifespans, lower mortality rates, and slower rates of aging than closely related species that do not feed on pollen.

The Pollen Connection

One hypothesis for their extended lifespan focuses on their unusual adult diet. While most butterflies feed only on nectar, Heliconius also consumes pollen, which was thought to provide the nutritional basis for its extended lifespan.

To test this idea, researchers compared pollen-feeding Heliconius hecale with its non-pollen-feeding relative, Dryas iulia. H. hecale maintained body mass and muscle performance longer than D. iulia. Even without pollen in its diet, H. hecale still outlived its relative by a wide margin. This suggests that diet alone does not explain Heliconius’s extended lifespan.

Dr. Jessica Foley, the study’s lead author from the University of Bristol’s School of Biological Sciences, explained that insects already show a huge range of lifespans. Some, like mayflies, live only a few days, while ant and termite queens can survive for decades. “This represents a roughly 5,000-fold difference within the class, compared with around a 100-fold difference in lifespan observed in mammals.”

Heliconius butterflies are notable because they have evolved both longer lifespans and slower rates of aging, allowing them to outlive close relatives from which they diverged only recently in evolutionary history.

A New Model for an Old Problem

Most aging research uses a limited set of laboratory organisms, such as mice, worms, and fruit flies, to study biological aging mechanisms. The heliconius butterfly provides a unique opportunity to study a long-lived species closely related to short-lived species, allowing for direct comparison in a natural context. Foley noted that comparing these two groups “can help reveal how lifespan is extended, making them a highly promising new model for research into the biology of aging and longevity.”

If pollen feeding and longevity evolved together but are not entirely dependent on each other, the next step is to identify the genetic and physiological changes responsible for both traits. Understanding these mechanisms in Heliconius butterflies could provide insight into how aging evolves across species.

Austin Burgess is a writer and researcher with a background in sales, marketing, and data analytics. He holds an MBA, a Bachelor of Science in Business Administration, and a data analytics certification. His work focuses on breaking scientific developments, with an emphasis on emerging biology, cognitive neuroscience, and archaeological discoveries.

Scientists Discovered a Fly That Sheds Its Wings and Sacrifices Its Sight

17 June 2026 at 22:21
Deer Ked Fly LeechAfter finding a host and shedding its wings for good, a blood-feeding fly appears to sacrifice some of its vision to better support its parasitic lifestyle. Researchers from Aberystwyth University and the University of Florence have discovered that this major shift in behavior is accompanied by a significant change in the insects’ sensory systems. Deer [...]

Negative Heat Flux Under Low-Shear-Wave-Velocity Zones

17 June 2026 at 12:24

Deep within our planet lies a critical interface known as the core–mantle boundary (CMB), a region where extreme temperatures and dynamic processes converge to shape Earth’s thermal and magnetic evolution. Recent research has illuminated the intricate behaviors of heat flow at this boundary, revealing how variations here influence the geodynamo—the mechanism responsible for Earth’s magnetic field. A groundbreaking study now explores how distinctive structures in the lowermost mantle can actually reverse the expected direction of heat transfer, fundamentally altering our understanding of how the deep Earth operates.

The core’s heat output and the mantle’s behavior are intimately linked, but spatial and temporal variations in heat flux at the CMB complicate this relationship. Heat flow from the core into the mantle typically fuels convective currents in the liquid outer core, driving the geodynamo process that sustains Earth’s magnetic shield. However, recent sophisticated simulations suggest that beneath certain geological features in the mantle, heat might instead flow back toward the core, a phenomenon previously unconfirmed and challenging conventional geophysical assumptions.

Central to this discovery are large low-shear-wave-velocity provinces (LLSVPs), massive structures located at the base of the mantle. These provinces are identifiable by their diminished seismic wave speeds, which geophysicists interpret as reservoirs of anomalously hot, chemically distinct materials. The new study models these LLSVPs with enhanced thermal conductivity adjustments and accounts for excess internal heating, simulating how these features interact dynamically with heat flow near the CMB.

The simulations reveal a striking phenomenon: heat flux directly beneath LLSVPs can be locally negative. This means, counterintuitively, that heat is being transferred from the mantle back into the core. This unexpected reversal challenges prior models which generally assumed a consistent outward flow of heat from core to mantle. Such negative fluxes have profound implications not only for the thermal balance of the Earth’s interior but also for the longevity and variability of its magnetic field.

Moreover, the research underscores that throughout the base of the mantle piles associated with LLSVPs, the heat flux remains lower than the adiabatic heat flux of the core. This thermal configuration suggests a degree of regional stratification at the top of the core, potentially explaining discrepancies observed in seismic and geomagnetic data. In other words, the topmost layer of the core may be thermally segregated in ways that we had not confirmed previously.

Interestingly, the study also explores the impact of subducted slabs—denser fragments of oceanic lithosphere—that eventually reach the CMB. The arrival of these slabs triggers pronounced spikes in heat flux, dramatically increasing the heterogeneity of lateral heat flow along the core–mantle boundary. This dynamic enhances the complexity of heat exchange patterns and further influences the geodynamo’s behavior, potentially affecting geomagnetic activity on geological timescales.

A significant implication of these findings relates to so-called “superchrons,” intervals lasting tens of millions of years during which Earth’s magnetic field remains stable without reversals. The occurrence of locally negative heat flux beneath the LLSVPs might explain these long periods of geomagnetic quiescence. When heat flows reversely into the core, it can alter convection patterns in ways that suppress the typical polarity flip mechanism, shedding new light on the origin and cessation of superchrons.

The study’s approach involved advanced mantle thermochemical convection modeling that incorporates temperature-dependent thermal conductivity and internal radiogenic heating within dense mantle piles. This methodological innovation provides a more realistic representation of the mantle’s behavior at extreme conditions than previous models, enabling researchers to capture subtle but critical feedbacks influencing heat fluxes at depth.

By reconciling seismic data, which reveals complex structures in the lowermost mantle, with geomagnetic observations that hint at temporal variability in the geodynamo, this research bridges a vital gap in Earth sciences. The correspondence between the spatial extents of LLSVPs and anomalies in the geomagnetic field suggests a coupling mechanism mediated through heat flux variations being directly tied to mantle dynamics.

The nuanced understanding of heat flow gleaned from this work also carries implications for the planet’s thermal evolution over geologic time. How heat migrates across the CMB influences the cooling rate of the core, the crystallization of the solid inner core, and consequently the lifecycle of the geodynamo. The discovery that heat transfer is not unidirectional, but can locally reverse in space and time, necessitates revisiting models of Earth’s deep thermal history and magnetic field generation.

This revelation also lays groundwork for interpreting seismic tomography results with a new lens, appreciating that chemical and thermal heterogeneity in LLSVPs exerts a tangible impact on core processes. The presence of chemically distinct reservoirs affects not only the mantle’s physical properties but also its thermal gradient with direct knock-on effects for core convection patterns and magnetic field intensity.

Such interconnectedness across Earth’s deep interior underscores the planetary-scale complexity of thermal and compositional interactions driving Earth’s long-term stability. The core-mantle boundary emerges not simply as a static physical barrier but as a dynamic interface where thermal regimes, chemical signatures, and fluid motion all coalesce to modulate our planet’s magnetic heartbeat.

Future research building on these findings may sharpen our forecasts for geomagnetic field behavior, including its reversals and excursions, by incorporating the interplay of mantle structures and heat flux heterogeneity shown in this study. Understanding these processes is not merely academic; Earth’s magnetic field shields life on the surface from charged solar particles, making geomagnetic stability crucial for habitability.

In conclusion, the discovery of negative heat flux beneath LLSVPs represents a paradigm shift in understanding Earth’s deep thermal dynamics. It opens fresh avenues into interpreting Earth’s magnetic field history and its deep interior’s energy budget, challenging geoscientists to refine their models of the planet’s evolving mantle and core mechanisms. The study invites a reconsideration of how internal heat governs the interplay between mantle convection and geomagnetic phenomena, securing a pivotal advance in the geophysical sciences.

As our planet continues its ceaseless churn beneath the crust, these findings remind us that Earth’s interior is a realm of profound complexity and subtle interactions. The dance of heat and composition at the core-mantle boundary not only choreographs magnetic field generation but ultimately shapes the environment that sustains life above ground. Unlocking its secrets brings us closer to comprehending the planet’s past, present, and future in extraordinary detail.


Subject of Research: Core–Mantle Boundary Heat Flux Variations and Their Impact on Mantle Dynamics and Geodynamo Behavior

Article Title: Negative core–mantle boundary heat flux beneath low-shear-wave-velocity provinces

Article References:
Deschamps, F., Guerrero, J.M., Amit, H. et al. Negative core–mantle boundary heat flux beneath low-shear-wave-velocity provinces. Nat. Geosci. (2026). https://doi.org/10.1038/s41561-026-02018-w

Image Credits: AI Generated

DOI: https://doi.org/10.1038/s41561-026-02018-w

Unusual Exoplanet Redefines the Concept of a Hot Jupiter

17 June 2026 at 01:04

For nearly a decade, the hot Jupiter CoRoT-2 b has presented a profound mystery to astronomers: its atmospheric hot spot is inexplicably located opposite the position observed on all other exoplanets of its kind. This peculiar phenomenon challenges conventional wisdom about the nature of hot Jupiters and their atmospheric dynamics. Recent research led by Aurora Kesseli, a staff scientist at the NASA Exoplanet Science Institute (NExScI) housed within Caltech’s IPAC center, has shed new light on this enigma by leveraging advanced spectroscopic data obtained from the Very Large Telescope (VLT) at the European Southern Observatory. This breakthrough offers compelling evidence that CoRoT-2 b defies a fundamental assumption about hot Jupiters: it is not tidally locked to its host star.

Hot Jupiters are a fascinating class of exoplanets typified by their colossal size—often comparable to or exceeding that of Jupiter—and their blisteringly close orbits around host stars, sometimes completing a single revolution in mere days. Because of these properties, hot Jupiters serve as prime candidates for detailed atmospheric studies. Their proximity to the parent star means they receive intense irradiation, significantly influencing their atmospheric dynamics, radiative properties, and chemical compositions. This environment makes them critical laboratories for testing and refining planetary formation, evolution, and climate models.

The accepted paradigm for hot Jupiter atmospheres is predicated on tidal locking, whereby the planet’s rotation period synchronizes with its orbit, causing one hemisphere to perpetually face the star, exposed to relentless stellar radiation, while the opposite side remains cloaked in darkness. This lock is thought to occur rapidly due to strong gravitational interactions between the planet and its star. The perpetual dayside is expected to feature a dominant hot spot slightly offset towards the direction of planetary rotation and orbital motion, driven by atmospheric super-rotation. This consistent pattern is observed across many studied hot Jupiters, reinforcing tidal locking as a foundational concept within exoplanetary atmospheric science.

However, CoRoT-2 b stands out starkly against this backdrop. Discovered in 2007 and studied extensively since, this hot Jupiter’s hottest atmospheric region is displaced not ahead of but behind the substellar point—the point on the planet directly facing its star—opposite to the behavior seen in counterparts. Initial hypotheses proposed to explain this anomaly included obscuring cloud layers, magnetic field-driven atmospheric dynamics complicating wind patterns, or a rotation period differing from the orbital period. Previous work by Lisa Dang, a collaborator and professor at the University of Waterloo, outlined these potential explanations based on early observational data.

Aurora Kesseli and her team recently applied phase-resolved emission spectroscopy using the CRIRES+ instrument on the VLT, capturing the planet’s atmosphere in unprecedented detail across different orbital phases. This method enables tracing variations in emitted light corresponding to temperature and wind structures dynamically as the planet orbits. The data conclusively pointed toward the third hypothesis: CoRoT-2 b exhibits a rotation rate slower than its orbital period, meaning it is not synchronized tidally. Specifically, one full rotation of CoRoT-2 b lasts approximately three Earth days, while its orbital period is about 1.5 days. This differential implies that by the time the planet completes a single axial spin, it has circumnavigated its host star twice.

This non-synchronous rotation leads to a decoupling of the traditional tidally locked pattern of day-night heating contrasts, fundamentally altering how atmospheric circulation redistributes energy. Without tidal locking, the expected eastward-shifted hot spot is replaced by a distinct thermal signature resulting from slower planetary spin interacting with intense stellar irradiation. The discovery challenges standard assumptions embedded in many exoplanet climate models that universally prescribe tidal locking for hot Jupiters, suggesting a more nuanced picture with rotational diversity.

Understanding the rotational state of exoplanets like CoRoT-2 b carries broader implications, especially in the context of habitability studies. Many terrestrial exoplanets orbit M dwarfs, cool stars constituting roughly 70% of the stellar population in the Milky Way. These stars have habitable zones—regions where liquid water can persist on planetary surfaces—so close that tidal locking is highly probable within relatively short stellar lifetimes. Since rotation influences temperature gradients, weather systems, and atmospheric retention, a tidally locked terrestrial exoplanet’s climate could differ drastically from one with asynchronous rotation. Hence, unraveling CoRoT-2 b’s rotation contributes to refining the models employed for predicting environments on potentially habitable worlds in tight orbits.

While the revelation of CoRoT-2 b’s slow rotation solves a significant piece of the puzzle, it simultaneously opens further questions. The mechanisms driving this atypical rotational state in a planet where tidal forces should dominate remain elusive. Possible contributors might include magnetic torques, differential interior structures, or recent dynamical interactions within its planetary system that disturbed its spin. Future observations, especially with upcoming flagship observatories like the James Webb Space Telescope, the Habitable Worlds Observatory, and the ground-based Extremely Large Telescope, promise to provide deeper insight into these processes by offering higher precision data across broader wavelength ranges.

Hot Jupiters continue to act as vanguards in exoplanetary science. They are currently the best-understood and most accessible class of exoplanets for atmospheric characterization, enabling astronomers to test and recalibrate models of atmospheric physics, chemistry, and dynamics. The case of CoRoT-2 b exemplifies how nature’s variability often defies simplified expectations, compelling constant refinement of theories and models. These advances do not merely enhance comprehension of gas giants but ripple outward to shape understanding of all planetary atmospheres, including those bearing life.

Kesseli underscores the excitement of probing “weird” exceptions within the exoplanet census, emphasizing that such outliers drive scientific progress. As instrumentation improves and more extensive surveys unfold, the taxonomy of exoplanetary rotation states, atmospheric dynamics, and climate regimes will grow richer. This improved framework will essentialize our broader quest to understand planet formation, stellar influences, and potential biosignatures on distant worlds. CoRoT-2 b’s defiance of tidal locking invites the scientific community to remain alert to unexpected phenomena lurking in exoplanet atmospheres.

In summation, the unraveling of CoRoT-2 b’s anomalous atmospheric hot spot through rigorous spectroscopic measurements marks a milestone in exoplanet research. It dispels the notion of universal tidal locking among hot Jupiters and reveals a more intricate rotational behavior impacting atmospheric properties. The ongoing inquiry into the cause of this slowed rotation will propel future efforts to decipher planetary spins, magnetic interactions, and orbital dynamics across a diverse planetary population. These insights will deepen our grasp of planetary physics and help guide the search for habitable environments beyond our solar system.

Subject of Research: Atmospheric dynamics and rotational state of the hot Jupiter CoRoT-2 b
Article Title: Unraveling the Mystery of the Peculiar and Young Hot Jupiter CoRoT-2b II: Phase Resolved Emission Spectroscopy with VLT/CRIRES+ and Gemini-S/IGRINS
News Publication Date: June 16, 2026
Web References: IPAC News, NExScI at Caltech, University of Waterloo Newsroom
References: Kesseli et al., submitted to The Astronomical Journal
Image Credits: Keith Miller (Caltech/IPAC – SELab)

Keywords: hot Jupiter, CoRoT-2 b, tidal locking, exoplanet atmospheres, phase-resolved spectroscopy, planetary rotation, atmospheric dynamics, VLT/CRIRES+, exoplanet climate models, M dwarf habitability, rotational decoupling, spectroscopic observations

“Geriatric” Butterfly Species Lives Almost Three Times Longer Than Its Relatives, Study Finds

16 June 2026 at 19:30

In the dense, vibrant rainforests stretching across South and Central America, a remarkable evolutionary marvel is unfolding in the form of a tropical butterfly genus that defies traditional biological limits on lifespan. According to a groundbreaking study led by researchers at the University of Bristol, as published recently in Nature Communications, Heliconius butterflies have evolved a sophisticated anti-aging mechanism that dramatically extends their lifespans compared to their close relatives. This discovery not only challenges existing paradigms surrounding insect longevity but also opens a new frontier in understanding the molecular and physiological bases of aging in natural populations.

Heliconius butterflies, widely distributed throughout neotropical ecosystems, have long intrigued biologists due to their exceptional longevity. Unlike most butterfly species, which complete their adult phase within a few weeks, Heliconius butterflies exhibit lifespans that soar to nearly a full year, with median lifespans averaging around three times those of closely related species. Specifically, Heliconius hewitsoni can live up to 348 days in the wild, a staggering contrast to the mere 14 days observed in its relative Dione juno. This magnified difference—in terms of maximum lifespan—exceeds a 25-fold disparity, presenting a natural laboratory to investigate the factors that contribute to longevity.

Delving into the evolutionary dynamics behind this phenomenon, the research team employed an integrative methodology that combined field observations, controlled insectary experiments, and mark-release-recapture studies across multiple Heliconiini tribe species. This multifaceted approach allowed the scientists to quantify not only lifespan but also the patterns of physiological aging, including metrics such as physical performance decline via grip-strength assessments. Intriguingly, in some Heliconius species like Heliconius hecale, the expected decline in physical capabilities that accompanies aging in most organisms was virtually absent, underscoring an evolved resistance to senescence.

The research highlights a unique ecological adaptation: adult pollen feeding. Heliconius butterflies are one of the few lepidopteran groups capable of digesting pollen throughout their adult lives, contrasting with the nectar-reliant feeding habits of most butterflies. This dietary specialization appears intricately linked to their extended healthspan and longevity. Pollen is a rich source of proteins and amino acids, which are hypothesized to support enhanced somatic maintenance and cellular repair mechanisms, potentially underpinning slower rates of aging and sustained physiological function.

To rigorously test the relationship between diet and aging, the study contrasted Heliconius hecale with its non-pollen-feeding relative Dryas iulia under controlled conditions that varied access to pollen. Remarkably, while Heliconius hecale individuals sustained their muscular function and body mass longer and evaded typical age-related deterioration, even those deprived of pollen retained a longevity advantage relative to Dryas. This finding implies that while pollen feeding contributes nutritionally, intrinsic genetic or epigenetic adaptations also play a critical role in extending lifespan, suggesting a complex interplay between evolved traits and ecological factors.

From an evolutionary biology perspective, the divergence in longevity and aging rates within the Heliconiini tribe exemplifies natural selection’s power in shaping life-history traits in response to ecological niches and resource utilization. The accelerated lifespan and delayed senescence in Heliconius suggest that adaptive shifts—such as adult pollen feeding—can drive profound modifications in physiology and perhaps modulate molecular pathways linked to aging, including oxidative stress resistance, protein homeostasis, and metabolic regulation.

The implications of this research extend beyond the entomological sphere, offering a promising model for the biology of aging and lifespan extension. Insects have already revealed fundamental insights into genetic regulation and cellular processes, and the Heliconius genus introduces a new dimension by combining extraordinary longevity with ecological and evolutionary relevance. Decoding the molecular mechanisms enabling Heliconius butterflies to circumvent typical aging processes could illuminate targets for biomedical research into human healthspan and age-related diseases.

Jessica Foley, the study’s lead author, emphasized the significance of these findings within the broader context of longevity research. Highlighting the vast interspecies disparity in lifespan—from ephemeral mayflies surviving mere days to ant and termite castes living decades—she notes that Heliconius butterflies offer a naturally evolved system to decode the underlying biology that governs such diversity. Their relatively recent evolutionary divergence from short-lived relatives strengthens the value of this natural comparative experiment.

Furthermore, the study underscores the utility of integrating ecological, physiological, and evolutionary data to unravel complex biological phenomena. By blending fieldwork with laboratory precision, the researchers were able to identify robust patterns of aging and performance that are rarely accessible in wild insect populations. This holistic approach models a pathway forward for future studies aimed at dissecting the multifactorial influences on longevity and healthspan.

In conclusion, the revelation that Heliconius butterflies not only live exceptionally long lives but also maintain functional integrity well into old age represents a profound breakthrough in understanding natural aging mechanisms. Their case underscores how dietary innovations and evolutionary pressures can collectively sculpt lifespan, challenging the limits traditionally imposed by physiology. As research progresses, the Heliconius genus is poised to emerge as a vital model system, shedding light on the deep evolutionary roots of ageing and longevity and potentially inspiring novel therapeutic approaches for age-associated conditions in humans.


Subject of Research: Animals

Article Title: Evolution of increased longevity and slowed ageing in a genus of tropical butterfly

News Publication Date: 16-Jun-2026

Web References: 10.1038/s41467-026-73635-7

Image Credits: Louise Bestea

Keywords: Insects, Lepidoptera, Rainforests, Tropical forests, Evolutionary biology

The LHC is on turning on again! What does that mean?

5 July 2022 at 18:20

Deep underground, on the border between Switzerland and France, the Large Hadron Collider (LHC) is starting back up again after a 4 year hiatus. Today, July 5th, the LHC had its first full energy collisions since 2018.  Whenever the LHC is running is exciting enough on its own, but this new run of data taking will also feature several upgrades to the LHC itself as well as the several different experiments that make use of its collisions. The physics world will be watching to see if the data from this new run confirms any of the interesting anomalies seen in previous datasets or reveals any other unexpected discoveries. 

New and Improved

During the multi-year shutdown the LHC itself has been upgraded. Noticably the energy of the colliding beams has been increased, from 13 TeV to 13.6 TeV. Besides breaking its own record for the highest energy collisions every produced, this 5% increase to the LHC’s energy will give a boost to searches looking for very rare high energy phenomena. The rate of collisions the LHC produces is also expected to be roughly 50% higher  previous maximum achieved in previous runs. At the end of this three year run it is expected that the experiments will have collected twice as much data as the previous two runs combined. 

The experiments have also been busy upgrading their detectors to take full advantage of this new round of collisions.

The ALICE experiment had the most substantial upgrade. It features a new silicon inner tracker, an upgraded time projection chamber, a new forward muon detector, a new triggering system and an improved data processing system. These upgrades will help in its study of exotic phase of matter called the quark gluon plasma, a hot dense soup of nuclear material present in the early universe. 

 

A diagram showing the various upgrades to the ALICE detector (source)

ATLAS and CMS, the two ‘general purpose’ experiments at the LHC, had a few upgrades as well. ATLAS replaced their ‘small wheel’ detector used to measure the momentum of muons. CMS replaced the inner most part its inner tracker, and installed a new GEM detector to measure muons close to the beamline. Both experiments also upgraded their software and data collection systems (triggers) in order to be more sensitive to the signatures of potential exotic particles that may have been missed in previous runs. 

The new ATLAS ‘small wheel’ being lowered into place. (source)

The LHCb experiment, which specializes in studying the properties of the bottom quark, also had major upgrades during the shutdown. LHCb installed a new Vertex Locator closer to the beam line and upgraded their tracking and particle identification system. It also fully revamped its trigger system to run entirely on GPU’s. These upgrades should allow them to collect 5 times the amount of data over the next two runs as they did over the first two. 

Run 3 will also feature a new smaller scale experiment, FASER, which will study neutrinos produced in the LHC and search for long-lived new particles. 

What will we learn?

One of the main goals in particle physics now is direct experimental evidence of a phenomena unexplained by the Standard Model. While very successful in many respects, the Standard Model leaves several mysteries unexplained such as the nature of dark matter, the imbalance of matter over anti-matter, and the origin of neutrino’s mass. All of these are questions many hope that the LHC can help answer.

Much of the excitement for Run-3 of the LHC will be on whether the additional data can confirm some of the deviations from the Standard Model which have been seen in previous runs.

One very hot topic in particle physics right now are a series of ‘flavor anomalies‘ seen by the LHCb experiment in previous LHC runs. These anomalies are deviations from the Standard Model predictions of how often certain rare decays of the b quarks should occur. With their dataset so far, LHCb has not yet had enough data to pass the high statistical threshold required in particle physics to claim a discovery. But if these anomalies are real, Run-3 should provide enough data to claim a discovery.

A summary of the various measurements making up the ‘flavor anomalies’. The blue lines and error bars indicate the measurements and their uncertainties. The yellow line and error bars indicates the standard model predictions and their uncertainties. Source

There are also a decent number ‘excesses’, potential signals of new particles being produced in LHC collisions, that have been seen by the ATLAS and CMS collaborations. The statistical significance of these excesses are all still quite low, and many such excesses have gone away with more data. But if one or more of these excesses was confirmed in the Run-3 dataset it would be a massive discovery.

While all of these anomalies are gamble, this new dataset will also certainly be used to measure various known entities with better precision, improving our understanding of nature no matter what. Our understanding of the Higgs boson, the top quark, rare decays of the bottom quark, rare standard model processes, the dynamics of the quark gluon plasma and many other areas will no doubt improve from this additional data.

In addition to these ‘known’ anomalies and measurements, whenever an experiment starts up again there is also the possibility of something entirely unexpected showing up. Perhaps one of the upgrades performed will allow the detection of something entirely new, unseen in previous runs. Perhaps FASER will see signals of long-lived particles missed by the other experiments. Or perhaps the data from the main experiments will be analyzed in a new way, revealing evidence of a new particle which had been missed up until now.

No matter what happens, the world of particle physics is a more exciting place when the LHC is running. So lets all cheers to that!

Read More:

CERN Run-3 Press Event / Livestream Recording “Join us for the first collisions for physics at 13.6 TeV!“

Symmetry Magazine “What’s new for LHC Run 3?”

CERN Courier “New data strengthens RK flavour anomaly“

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