Long before pottery became a common art form, the southern Levant underwent major environmental changes that stripped vegetation from hillsides and caused large amounts of clay-rich soil to accumulate in the valleys.

Now, a new study led by Amos Frumkin at the Hebrew University of Jerusalem suggests this process may have exposed Neolithic communities to the effects of intense fire on clay. Frumkin refers to this as the natural kiln hypothesis.

The study, published in Geomorphology, examined evidence from ancient sediments, cave deposits, and charcoal remains and identified two separate periods when wildfire and erosion impacted the area.

The Hills That Burned Twice

The two periods are separated by more than 100,000 years; the first of them was the last interglacial, lasting from about 129,000 to 116,000 years ago. The second was the early Holocene, which lasted from about 11,000 to 7,000 years ago, a period that corresponds with the establishment of farming communities in the region. The most intense burning occurred between 9,500 and 8,200 years ago.

Both periods left similar evidence. Small charcoal particles in ancient lake sediments indicate periods of increased burning. Chemical signatures in cave formations show the loss of vegetation and soil that followed. Frumkin notes that the scale and timing of the fires point toward climatic causes rather than increased human use of fire, although people in the region already used fire on a limited scale.

A Natural Kiln

Once the vegetation disappeared, the hillsides could no longer retain soil when it rained. The terra rossa clay, therefore, washed down the slopes and collected in low-lying areas like the Jordan and Dead Sea valleys, building up in thick layers. Since this redeposited clay was very fertile, Neolithic settlements tended to cluster in these areas.

Pottery appeared in the region during the same time period. Earlier petrographic studies show that local redeposited terra rossa clay provided the material for Yarmukian pottery from the Jordan Valley, the same material that erosion deposited in Frumkin’s study.

“A wildfire is normally seen only as a catastrophe, but environmental disruption can also expose people to new materials and new possibilities,” said Frumkin. “Neolithic communities in the Jordan Valley may have watched fire transform the clay beneath and around their settlements and realized that this process could be reproduced deliberately. If so, one of humanity’s most important technologies may have emerged partly from people learning to imitate what they had already seen nature do.”

The 120,000-Year Comparison

This earlier period can serve as a comparison for this hypothesis. Vegetation also declined, and clay deposited heavily during the last interglacial period; however, pottery did not appear after that event. Frumkin sees this as an example of a natural limitation because the required materials were available 120,000 years earlier, but there were no settled, agricultural societies to identify and replicate the process.

The comparison suggests that environmental conditions alone were not enough to produce pottery. The innovation may have emerged when these conditions intersected with a society capable of recognizing the opportunity and reproducing what it observed.

Frumkin stresses that the hypothesis is still speculative. Although the fires, the clay deposits, and the earliest pottery all come from roughly the same period, current dating techniques cannot establish the exact order of events. Further excavations might search for fire-baked clay beneath the oldest pottery layers and test whether wildfires in the Jordan Valley reached the temperatures needed to harden clay. Finding any pottery that clearly predates the major fire episode would challenge this hypothesis.

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.

Equations once used to predict whether populations of rabbits would boom, stabilize, or collapse are now being applied to something potentially even more complicated: romantic relationships.

According to mathematician Laurent Pujo-Menjouet of Claude Bernard University Lyon 1, the forces that determine whether a couple survives life’s inevitable stresses can be studied much like other complex systems. Attraction can strengthen or fade, outside pressures can push a relationship away from stability, and perhaps most importantly, there may be a critical mathematical threshold beyond which recovery becomes increasingly difficult.

In his new book, Love! Valour! Equations! The Mathematics of the Couple, published by CRC Press, Pujo-Menjouet draws on mathematical ecology, psychology, literature, and even film to explore why some couples weather years of conflict, stress, children, illness, and financial hardship while others gradually drift apart.

The goal isn’t to produce an equation that predicts who will fall in love with whom. Instead, Pujo-Menjouet treats relationships as dynamical systems—systems that change over time, respond to disturbances, and can move toward either stability or decline.

“There is no mysterious enchantment or magic potion. By now, that would be known,” Pujo-Menjouet writes in the book, which draws on mathematics, psychology, literature, and film. “Is all hope lost then? Certainly not. That is precisely where everything becomes interesting.”

From Rabbits to Relationships

The mathematical models Pujo-Menjouet uses originated in ecology. His work uses Malthusian growth models and the Lotka-Volterra equations, originally developed to describe population dynamics in animals such as rabbits. He also studies the Allee effect, a phenomenon that explains how populations struggle to recover if they drop below a particular size.

Pujo-Menjouet adapts these concepts to relationships, using the idea of a critical threshold to examine when a couple may become increasingly vulnerable to separation. He also draws on the research of psychologist John Gottman, who showed that relationship behaviors can be quantified as data.

“Just as we can predict population growth or endangered species, we can model the evolution of feelings within a couple,” Pujo-Menjouet explains. “We’re not trying to predict who you’ll fall in love with, we’re trying to understand why some couples remain stable despite life’s inevitable shocks while others slowly drift apart.”

A Threshold for Falling Apart

The basic idea is simple: a relationship may have a critical threshold, or minimum level of stability needed to keep the bond intact. Pujo-Menjouet’s model considers three main forces: mutual attraction, the gradual weakening of feelings over time, and each partner’s emotional response to the other.

“If your feelings fall below this threshold and stay there, the mathematics predicts an inevitable decline toward separation,” Pujo-Menjouet says. “However, understanding this threshold gives couples a powerful tool: they can recognize danger zones and take corrective action.”

These models emphasize how couples recover from drifting apart. The key question is not whether couples experience conflict, but whether they have the resilience to restore balance afterward.

“Life will always send its wolves: stress, illness, work, children, financial difficulties,” Pujo-Menjouet says, “mathematics helps us understand how to build the brick house rather than the straw one.”

Could AI Become Love’s Early-Warning System?

Researchers such as Pujo-Menjouet are considering whether they could combine these mathematical models with artificial intelligence to create an early-warning system for relationships. Such a system could detect the signs of instability before they become apparent to the people involved.

Pujo-Menjouet compares this method to a GPS for relationships, showing where a couple currently is, where its dynamics may be heading, and the various ways they could arrive at a healthier place. Although the models don’t decide who somebody will love, they can help explain how relationships evolve and what actions might help couples maintain their connection. Early detection of problems would allow partners to make changes before reaching a stage where recovery becomes unlikely.

Why Love Resists a Formula

Pujo-Menjouet admits that present-day mathematical models have limitations. Most of these models are based on data from Western relationships. In contrast, the factors that impact whether a relationship succeeds or fails can differ from one culture, religion, or generation to another. He points out that the model must account for additional factors to be applicable everywhere.

Human behavior also introduces unpredictability that mathematical models cannot fully account for. People can change their habits, strengthen their commitment, seek therapy, or otherwise alter the dynamics of a relationship in ways the equations cannot anticipate. The equations identify tendencies rather than determine an unavoidable outcome.

“Mathematics can illuminate patterns and provide guidance,” Pujo-Menjouet says, “but ultimately, the success of a relationship depends on two people choosing, every day, to nurture their connection. The equations can show you the path, but you still have to walk it together.”

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.

For decades, the painted tombs of Tarquinia, Italy, have been viewed as artwork depicting scenes of music, feasting, processions, and the afterlife that date back to the first millennium BCE.

A recent study took a different approach to interpreting these paintings by examining how the physical characteristics of these tombs might have affected the senses of the ancient people who visited them. Archaeologists Maurizio Forte of Duke University and Jacqueline Ortoleva of the University of Oxford used AI-assisted visual analysis, 3D architectural modeling, and acoustic surveys to reconstruct the physical experience of entering two tombs over 2,400 years old.

The researchers propose that these tombs not only served as burial sites but also as spaces that could shape visitors’ sensory experiences. Their findings, published in the Journal of Archaeological Method and Theory, indicate that the two chambers could have produced contrasting sensory effects.

Modeling What Ancient Visitors Would Have Felt

Forte and Ortoleva prepared detailed three-dimensional models of both tombs and conducted acoustic surveys in order to gain an understanding of the sensory experience. To do this, they played recorded handclaps at different locations within each chamber and measured how the sound decayed and propagated through the space. The results indicated that low-frequency sounds under 1,000 Hz were particularly important in this environment. Forte and Ortoleva stated that people not only hear these sounds but also feel them in the body, where they can cause vibration, disorientation, and possibly alterations in cognitive state.

The team used AI models to identify features that may have attracted attention and to determine where rituals may have taken place. Lighting relied on candlelight, as torches would have produced unsafe amounts of smoke in these confined spaces.

A Calming Experience

Built between 450 and 400 BCE, the smaller Tomba del Gallo offers a striking contrast to the larger tomb. A steep stairway measuring 3.31 meters long and 2.5 meters wide descends to a burial chamber. The artists painted a banquet scene on one wall of the stairway corridor and musicians playing pipe instruments on the opposite wall.. This stairway leads directly into the main chamber.

In the main chamber, visitors naturally focus on the paintings and on points where the architecture changes. Areas of high curvature where the chamber walls meet function as visual focal points. Visitors may have used these areas for ritual offerings or performed ritual gestures there.

The acoustics in the Tomba del Gallo also suggest this function. The reverberation in the chamber is short and doesn’t allow sound to build up. Instead, it rises and moves away from the space. The researchers’ simulations link the combination of clear sightlines and short reverberation to alpha-band brain activity, often associated with relaxed alertness and focused visual attention. The researchers describe the result as a comparatively calm, focused experience that lets visitors concentrate on the paintings.

A Disorienting Descent Into the Afterlife

The second tomb, Tomba dei Demoni Azzurri, dates to the same period, between 450 and 420 BCE. The burial chamber is much larger, measuring 6.2 by 6.1 meters, almost four times as large as that of Tomba del Gallo.

One image in the tomb depicts a group of demons with a small boat carrying a woman and a smaller man. Etruscan iconography often associated demons with the afterlife.

Compared with the Tomba del Gallo, the acoustics in this chamber are considerably more intense. The reverberation is greater and lasts longer, particularly in the area near the banquet scene, and sound passes easily between the tomb and the outside area. Forte and Ortoleva state that the variety of reverberation times means both low-frequency sounds, such as drumbeats or handclaps, and high-frequency sounds such as voices would have echoed throughout the space, thus producing a far more powerful sonic environment than in the smaller tomb.

“Visual saliency analysis identifies the blue demon on the right wall as an extreme attentional attractor,” Forte and Ortoleva write. “The demon’s chromatic qualities, combined with its aggressive posture and spatial prominence in the center of the burial chamber’s right wall, produce an element of visual surprise. The visual gaze is arrested and attention seems to be forcibly captured. This is paralleled by the acoustics of the tomb.”

The combination of low-frequency vibration, loss of spatial orientation, and increasingly unintelligible speech may have left visitors feeling disembodied and disoriented. The team’s simulations link these effects to beta-band activity and transient gamma bursts, which are associated with heightened alertness and threat detection.

An Open Question

Together, the two tombs suggest that Etruscan mourners moved through carefully arranged environments of candlelight, painted figures, and resonant sound, with each tomb offering a distinct sensory experience. It remains unclear whether the tomb builders intentionally designed these effects or if they simply resulted from the available architecture and materials.

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.

LSD, psilocybin, and 2C-B are often classified together as psychedelics—but new brain imaging research in rats shows that each compound produces its own distinct pattern of brain activity.

These differences appeared during both the drugs‘ active effects and in brain scans taken one week later, according to a study published in Nature Communications.

Interest in psychedelic medicine has increased rapidly, with several compounds now being tested in clinical trials for conditions such as depression, PTSD, and addiction. Most previous studies have focused on individual drugs, leaving it unclear how the effects of different psychedelics actually overlap. To address this, researchers at the University of Southern Denmark designed a study to directly compare the effects of different psychedelics side by side.

Different Drugs, Different Fingerprints

Each drug produced its own distinct pattern of brain activity, and only a handful of changes showed up across all three.

“Psychedelic drugs are often discussed as if they work in the same way. But when we look at the brain, the differences are clear,” said Mikael Palner, associate professor at the University of Southern Denmark’s Department of Clinical Research and senior author of the study. “Each drug appears to affect its own networks, and that is new knowledge.”

2C-B and LSD drove the most changes while the drugs were active, but the more striking result showed up after the drugs had worn off. At the one-week mark, 2C-B primarily affected regions of the brain associated with reward, while LSD showed effects in areas involved in habits and motivation. Meanwhile, psilocybin primarily affected regions associated with emotion.

“What is interesting is that the differences do not only appear while the drugs are active. We can also see different traces in the brain afterwards,” said Frederik Gudmundsen, the study’s first author, who completed his PhD at the University of Southern Denmark and now works as a postdoc at Aarhus University’s Translational Neuropsychiatry Unit.

Not Better, Just Different: and Still a Long Way From the Clinic

None of this means one drug is better than another, but it does suggest psychedelics may not be one interchangeable category when it comes to developing them for medical practice.

“If the drugs affect the brain differently, it is also possible that they may eventually prove better suited to different disorders,” Palner said. “We do not know that yet, but our study provides a biological starting point for investigating it.”

Despite these intriguing findings, the research does not determine if these distinct patterns of brain activity from different psychedelic substances apply to human patients. The researchers acknowledge this limitation, noting that the results are based on animal models and that further studies in humans are necessary to determine if the same differences apply.

The authors also disclosed that Mikael Palner holds shares in the psychedelic drug companies Compass Pathways and AtaiBeckley, but neither company was involved in the research.

The study still offers a detailed biological picture of how different psychedelic substances alter brain metabolism and network activity and could help researchers investigate whether specific compounds might eventually prove better suited to particular disorders.

For now, researchers have yet to determine whether LSD, psilocybin, and 2C-B will ultimately have distinct roles in medicine or whether the differences between them are less important in humans.

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.

A recent study published in Protist reports that a marine microorganism reproduces in a previously unknown way: by creating new cells inside its body, then rupturing to release them.

The bizarre process is reminiscent of the reproductive horror depicted in the movie Alien, albeit on a microscopic scale.

This microbe is part of the Labyrinthulomycetes, a group of marine microorganisms that play a key role in recycling nutrients by breaking down dead plants and animals in salty environments. Beyond their ecological importance, some species in this group are valued for producing omega-3 fatty acids like DHA, which is also found in oily fish, and carotenoids, pigments used in food coloring.

This newly discovered species also contains roughly 50% protein, adding to its potential commercial value for applications such as food supplements, infant formula, and aquaculture.

An “Alien” Reproductive Strategy

“Instead of dividing into two, as we would expect, the mature cells develop a large internal chamber in which entirely new daughter cells grow,” said Professor Peter Morris, a plant biologist at Heriot-Watt University.

“Some of those daughters already have another developing generation inside them, before they are released when the mother cell breaks open,” Morris added. “So, these microbes can be pregnant grandmothers, in the same way as some species of greenfly are born already pregnant.”

The researchers named the new species Caledochytrium aldermanii, drawing from Caledonia, the Latin name for Scotland, where it was discovered in three locations. The species name also recognizes Dr. David Alderman, whose early work culturing the microbe made the study possible.

This discovery resulted from a long-term collaboration among Heriot-Watt University, its spinout company Strameno, CEFAS Weymouth, and the Institute of Aquaculture at Stirling University.

Caught by Watching, Not Just Sequencing

Dr. Jane Polglase, who has spent nearly five decades studying Labyrinthulomycetes and co-founded Strameno with Alderman and Dr. Lydia Brown, helped document the microbe’s unusual reproduction. The team relied on traditional observation and description, an approach less common in today’s genomics-focused research.

“While lots of scientists now focus on the DNA of any creature, we’ve taken an old-fashioned approach, also observing the microbe’s behavior and describing its morphology fully,” Polglase said. “If we had not done that, we never would have captured this peculiar reproductive process on camera.” When the team finally caught it under an electron microscope, she said, “We couldn’t believe what we were seeing.”

Resourceful Marine Recyclers

Researchers found Caledochytrium in a variety of habitats, including octopus dens, on rainbow trout, and in a salt marsh along Scotland’s east coast. The researchers believe it contributes to nutrient recycling by breaking down animal and plant material.

An important part of this recycling process is the ectoplasmic net, a network of membranes the microbe creates to move around, feed, and stay buoyant. When it moves to a new surface, the microbe leaves the net behind, where marine larvae can feed on the leftover material, helping pass protein and lipids up the food chain.

What Comes Next

“Understanding how this species reproduces is key to understanding how it could be used in commercial settings, like aquaculture,” Morris said.

With this phase of research complete, the Heriot-Watt and Strameno team hopes others will continue the work. The discovery highlights how much remains to be learned about the diversity and behavior of life in the oceans.

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.

In Boé National Park, researchers have repeatedly encountered a small number of trees marked by gouged bark and piles of stones at their bases. These signs suggest that wild chimpanzees have returned to the same trees for years to throw rocks. According to a recent field account by University of Victoria researchers Robyn Nakano and Ammie Kalan, some of these sites have remained in use for over a decade.

This behavior, called accumulative stone throwing, has been observed in only four chimpanzee populations in West Africa. While rocks and trees are widespread in chimpanzee habitats, piling stones at specific trees is rare. Nakano, Kalan, and other researchers suggest this may be a cultural practice within certain groups rather than arising from environmental factors alone.

What the Behavior Looks Like

Video recordings collected through the Pan African Programme and analyzed in a 2016 Scientific Reports study led by Hjalmar Kühl show that mostly adult male chimpanzees throw rocks at particular trees and repeatedly return to the same trunks. During these events, the chimpanzees pant-hoot, a loud call used for long-distance communication, and sometimes perform buttress drumming by repeatedly striking the tree’s buttressed base with their hands and feet.

Pant-hooting and buttress drumming are typical features of displays put on by male chimpanzees. The fact that these behaviors occur alongside stone throwing suggests that accumulative stone throwing may have developed as a variation of these existing social displays.

A Ritualized Behavior, Not a Coincidence

Researchers suspect this behavior may be cultural rather than simply a response to environmental conditions because it occurs only in certain areas, even though appropriate rocks and trees are common throughout chimpanzees’ habitats. Within one population, only particular trees are used as throwing sites. Earlier studies have suggested that the behavior might function as a form of communication or could indicate places of symbolic significance within a community’s territory.

The behavior could also offer archaeologists a rare example of how repeated stone use and accumulation can create material traces that persist after the animals that made them have moved on.

Some primates use stones as tools, including populations that use rocks to open nuts for food. Accumulative stone throwing differs because the behavior occurs in a social context rather than during extractive foraging. The purpose of this behavior for the chimpanzees remains unclear.

Into the Boé Wilderness

Nakano and Kalan conducted their fieldwork from Béli, a village where the Dutch nonprofit Chimbo operates a solar-powered research compound with local partners. The team traveled 22 kilometers by bicycle and on foot into the savanna-woodland to establish a camp, working with field assistants Djei Baldé, Balu Séra, and master’s student Taylor Tippett from the Great Ape Behaviour Lab.

The Boé chimpanzees are not used to humans and tend to avoid them, making direct observation impossible. The team instead set up two video cameras at each known stone-throwing site and placed audio recorders nearby to monitor the area.

Each day began at 6:30 a.m. with visits to two to five sites to replace SD cards and batteries, check equipment, measure trees, and create 3D scans of rocks thrown at the trees for later analysis. The team also recorded chimpanzee nests, feeding traces, and vocalizations along the trails. Their camp was located beside the Fefine River, which continues flowing through the dry season and provides an important water source for wildlife.

A Decade of Stone Throwing

The team found that most sites first identified by the Pan African Programme and revisited in 2017 remained active when Nakano and Kalan’s team returned in 2026. Chimpanzees have returned to these same trees to throw rocks for more than ten years.

The video and audio collected during this trip will allow the team to identify the age and sex of individual stone-throwers and observe how nearby chimpanzees respond to these events. This data could help the researchers determine the purpose of this behavior.

A Landscape Under Threat

Chimpanzees’ habitat in Guinea-Bissau is becoming increasingly threatened by industrial mining. During fieldwork, the researchers discovered boreholes dug to explore bauxite, the ore used to produce aluminum. Although bauxite mining might help promote economic development, comparable operations in neighboring Guinea have caused habitat loss and pollution, with negative effects on both wildlife and local communities. The country’s political instability also presents challenges for environmental oversight.

Nakano and Kalan emphasize that losing these stone-throwing sites would be both a cultural and ecological loss, erasing a documented example of primate material culture.

What’s Still Unknown

Nakano and Kalan are still analyzing the footage from this field season, but the main question of why chimpanzees throw stones at these specific trees remains unanswered. Still, the evidence collected by the cameras and recorders could help determine whether the behavior functions as territorial signaling, long-distance communication, or something else entirely.

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.

A new study published in Risk Analysis found that residents living within five miles of the former Santa Susana Field Laboratory reported autoimmune disorders at more than four times the rate of those living 11 to 15 miles away.

Researchers from the University of Southern California led the study, shifting focus beyond the cancer statistics that have dominated discussion of the site for years. Instead, they examined health conditions and protective behavior among residents of a higher-income community living near a contaminated site, rather than the lower-income communities typically studied in environmental risk research.

An Unused Meltdown Superfund

Located in the Simi Hills northwest of Los Angeles, the Santa Susana Field Laboratory hosted rocket engine testing from 1949 to 2006 and nuclear reactor operations from 1953 to 1980. In 1959, a partial meltdown occurred at the site, which later became associated with radioactive and chemical contamination in soil and groundwater both on and beyond the property. Some have described the accident as the worst nuclear accident in U.S. history.

Although SSFL was designated a Superfund-eligible site in 1989, it has never been added to the National Priorities List. As a result, the site has not been cleaned up through the standard federal Superfund process.

Previous health studies did not find a significant increase in most cancers among those who lived near the site. A 1992 California Department of Health Services report also concluded that people living near SSFL were not at increased risk of developing cancers associated with radiation exposure. However, many residents and advocacy groups still believe that contamination from the Santa Susana Field Laboratory may be negatively impacting community health.

Testing What Money Can and Can’t Buy

Most Superfund sites are located in low-income areas, with 62% of nearby households earning less than $50,000 a year nationwide. The Santa Susana Field Laboratory is different, as it is surrounded by higher-income neighborhoods. This gave the USC team an opportunity to examine how residents with greater financial resources respond to environmental hazards in their community.

Led by Jenna Blyler of the USC Wrigley Institute for Environment and Sustainability, the team surveyed 475 residents living within 15 miles of the site. More than half (56%) reported household incomes of $100,000 or more.

Illness That Tracks With Distance

The study found that 18% of residents living within five miles of the Santa Susana Field Laboratory reported autoimmune disorders, as compared to 4% of those living between 11 and 15 miles from it. Similarly, 15% of residents living within five miles reported metabolic and endocrine disorders, compared with 2% of those living 11 to 15 miles away.

Over one third of residents said they had received at least one chronic diagnosis since moving to the area, a rate similar to the national average of 38%. This result is notable because chronic illness is usually less common in higher-income communities.

Fear as a Motivator

“We expected to see wealthier people take more actions to protect themselves given their greater capacity to cope and affect change,” Blyler said. “Instead, fear of the contamination was what motivated protective action, rather than their perceived ability to manage the risks.”

The study also found that residents were more likely to adopt protective measures if they believed those measures were expensive. The finding runs counter to the researchers’ expectations and to previous research suggesting that higher costs can discourage protective behavior.

Blyler and her coauthor, Joseph Árvai, suggest two possible reasons for this result. The community may be able to afford costs that would prevent other groups from taking action, or residents may see a higher price as a sign that a precaution is effective and worth the investment.

What the Study Can’t Answer

The authors note several limitations of the study. The research is based on self-reported diagnoses collected at one point in time, and it does not show that contamination from the Santa Susana Field Laboratory directly caused the health conditions residents reported.

The researchers also found that health anxiety partially explained the relationship between existing illness and protective behavior, but the study could not determine why certain conditions were more frequently reported closer to SSFL.

Future studies using objective health data and longer-term follow-up could help determine whether the reported patterns reflect actual differences in disease prevalence and whether environmental exposure plays a role.

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.

A recent analysis of bones found in two separate underwater cave systems in South Australia has provided researchers with a new framework for investigating how animal remains, including those of extinct megafauna, came to rest in these submerged environments. 

Well-preserved bones have often been found in submerged caves, but interpreting how they accumulated and what happened to them afterward has been difficult. Researchers have had limited tools for determining the environmental processes that alter remains over time.

The new study, led by Griffith University PhD candidate Meg Walker and Professor Julien Louys of the Australian Research Centre for Human Evolution, identifies physical, chemical, and molecular markers that can provide clues about the environmental conditions each specimen experienced. The findings were published in PLOS One.

Reading the Fingerprints Left on Cave Bones

With help from specialist cave divers from the Cave Divers Association of Australia, Walker’s team examined animal bones recovered from Green Waterhole and Gouldens Sinkhole, two underwater cave systems near Mount Gambier, South Australia. Gouldens Sinkhole reaches 63 meters deep through a nearly 30-meter-wide shaft.

The researchers used radiocarbon dating methods on 41 specimens and examined them at various scales, starting with a visual evaluation of spatial distribution and surface wear before progressing to portable X-ray fluorescence, scanning electron microscopy, and protein analysis. Using these techniques, the researchers identified chemical residue, signs of bacterial damage, and traces of ancient DNA. The group also identified changes associated with different preservation environments by comparing submerged bones with those recovered from nearby dry caves.

Light, Algae, and Total Darkness

Light played an important role in some of the most noticeable changes to the bones. Near the cave entrances, where sunlight was available, algae and aquatic plants grew on the bone surfaces and left black biological stains, while cyanobacteria produced circular etchings and tunnels on the outer surfaces. Deeper within the caves, in areas where sunlight did not reach, the bones mostly stayed the same and retained their original characteristics.

This distinction is important because it shows that staining alone does not indicate that a bone was buried in sediment or fully submerged, as previously assumed. Instead, it shows that the bone was simply exposed to light.

A Different Kind of Damage on Dry Land

Bones from the dry sections of the cave systems showed different patterns. In the absence of water and algae, land-based bacteria penetrated the bone from within, while plant roots created long grooves on the surface as they grew in search of nutrients. These features are distinct from those observed in submerged specimens.

Cows, Kangaroos, and One Very Specific Sheep

The bones in the team’s study were not from ancient megafauna, belonging instead to cattle, kangaroos, emus, sheep, pigs, dingoes, rabbits, possums, quolls, and swamp rats. European settlers likely deposited the specimens in the caves after they arrived in the Mount Gambier region in the 1840s. DNA tests showed that one bone came from a Merino sheep.

A Deeper Mystery Still Submerged

The ultimate goal is to apply this framework to older material. Caves in the Mount Gambier region, such as Tank Cave and Englebrechts Cave, have yielded remains of Australia’s Pleistocene megafauna, including Diprotodon, a large marsupial similar in size to a rhinoceros, Thylacoleo carnifex, the largest known marsupial predator, and short-faced kangaroos that reached about 2 meters in height. Some of these fossils have remained undisturbed for more than 60,000 years.

Using Walker’s framework when looking at these specimens might help researchers understand how Australia’s megafauna fossils accumulated and could also provide a method for investigating factors such as human activity and environmental change that caused their extinction.

“This study has delivered the first framework for interpreting how megafauna fossils formed, survived, and changed in underwater caves,” Walker said. “It will provide archaeologists and paleontologists worldwide with a powerful new tool for reconstructing past environments and histories in these challenging conditions.”

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.

After ten years of fieldwork in Taiwan’s remote mountain regions, researchers have identified an 84.1-meter (276-foot) Taiwania fir, now recognized as the tallest tree documented in East Asia. The team also found dense forests containing dozens of giant Taiwania firs, suggesting that other giant trees may remain hidden in Taiwan’s rugged interior.

The study, published in Frontiers in Forests and Global Change, was conducted by a team led by Rebecca Chia-Chun Hsu of the Institute of Taiwan Forestry Research, in collaboration with researchers Chi-Kuei Wang and Chung-Cheng Lee of National Cheng Kung University. Starting in 2014, the group, known as the Taiwan tree seekers, located and measured trees that had previously gone unrecorded by combining traditional field surveys with laser-based mapping and the help of citizen scientists.

The researchers found that the giant trees generally grow at elevations of about 2,087 meters and on slopes with an average inclination of 40 degrees. This combination of elevation and rugged terrain makes conventional tree surveys extremely difficult.

A Decade of Ground-Truthing

In August 2014, a systematic search began when scientists from the Taiwan Forestry Research Institute visited the Cilan conservation area to measure the ‘Chilan Three Sisters’, a group of Taiwania firs known locally but not formally recorded. The tallest tree was 69.3 meters high and had a trunk almost three meters wide. The Tree Project, a group of professional climbers from Australia, photographed the trees in 2017 and helped draw greater attention to Taiwan’s giant forests.

During a subsequent expedition near Mt. Benya and Great Ghost Lake, the team hiked for four days with their equipment to reach the study area. This experience showed how difficult it is to estimate the height of giant trees from the ground, since visual estimates can be unreliable in densely wooded, multi-layered old-growth forests. Although the team measured one tree at 71.7 meters, they concluded that ground-based surveys alone would not be sufficient for such a large and complex landscape.

LiDAR and a Problem With the Landscape

To improve their search, Hsu’s team collaborated with Wang and Lee’s remote sensing group at National Cheng Kung University and adopted LiDAR technology. LiDAR uses laser pulses from aircraft to create three-dimensional models of the forest, including estimates of tree height. However, Taiwan’s rugged topography caused the automated software to misinterpret cliffs and abrupt elevation changes as extremely tall trees.

Human reviewers proved more effective than the automated software at identifying these geological false positives. In 2020, hundreds of citizen scientists began examining the LiDAR profile images manually to distinguish real cases from artifacts. By the end of 2022, the Taiwan Giant Tree Map had identified 941 trees taller than 65 meters.

The researchers concluded that combining airborne laser scanning with crowdsourced image reviews and expert analysis can greatly reduce terrain-related errors in estimating tree heights.

Finding the “Heaven Sword”

In 2023, the mapping project led the team to a candidate for Taiwan’s tallest tree, which could be reached after traveling 20 kilometers down a river and then spending two days climbing. A direct measurement established the tree’s height at 84.1 meters, making it the tallest tree ever documented in Taiwan and East Asia. The team called it the ‘Heaven Sword of the Da’an River’. The Indigenous Rukai people have a name for trees of this kind and describe them as ones that ‘hit the moon’. By early 2026, researchers had documented 10 Taiwania firs taller than 70 meters, including two that exceeded 80 meters.

The mapping effort also brought the team back to the Great Ghost Lake region, nearly ten years after their initial visit. There, they identified about 30 large Taiwania firs growing together in an ancient stand, which the team began calling ‘temples of giants.’ In a hectare of forest near Mt. Benya, they recorded 11 individual trees exceeding 65 meters in height.

What the Giants Are Storing

The importance of these forests goes beyond their height. In 2024, Hsu’s team, in collaboration with 15 citizen scientists, surveyed Tao Tree Valley, home to Taiwan’s third-tallest tree, to determine how much carbon the forest stores. They found a carbon density of 1,384.5 megagrams per hectare, without including the root systems. The estimate is comparable to carbon-storage densities reported for some of the world’s most carbon-rich forests, including giant eucalypt forests in Tasmania. The researchers noted that their estimate did not include root systems and may have underestimated the forest’s true carbon storage.

The researchers still do not know how many other giant trees remain hidden in Taiwan’s mountains. However, the combination of LiDAR mapping, citizen science, and field verification gives them a way to search terrain that would otherwise be nearly impossible to survey systematically.

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.

This summer, people across the UK may be noticing more dead bumblebees on the pavement than usual, and scientists say there is a reason behind the phenomenon.

The pattern results from a combination of naturally short life cycles, elevated temperatures, and long-term changes in land use, according to Senior Lecturer in Zoology Alex Dittrich of Nottingham Trent University, who explains that extreme heat, pesticides, habitat loss, and other environmental pressures can make survival more difficult for these important pollinators.

Bumblebee workers usually only live for four to six weeks. The colony is arranged to allow this turnover; if a worker dies, the other bees in the hive remove the body to prevent the spread of disease. It is therefore not uncommon to find dead bees on sidewalks. Although this rate of death is normal, further environmental stressors can make survival even more difficult.

A Summer of Record Heat

June recently saw the warmest temperatures ever recorded in England, while the UK as a whole experienced its second-highest June temperatures on record. High temperatures affect bumblebees by interfering with their development, reproduction, and ability to fly.

These temperatures can also push colonies beyond the limits of their natural cooling mechanisms; although bees keep the temperature inside the hive down by waving their wings, this method is only effective up to certain temperatures, and prolonged heat exposure can alter development and threaten long-term population stability.

Higher temperatures also interfere with the timing of biological events. Climate change can also contribute to phenological mismatch, in which species that depend on one another become out of sync with seasonal changes. For instance, bees might emerge from hibernation before flowers are available, or flowers may bloom and then die off before the bees are active. In these situations, the bees are left without access to nectar at crucial times.

Pesticides Compound the Problem

Chemical exposure also affects bumblebee populations. Although the EU and UK have banned the most harmful neonicotinoids, other insecticides like organophosphates, synthetic pyrethroids, and phenylpyrazoles are still widely used. These chemicals can paralyze or kill bees and also interfere with their ability to navigate. Herbicides can also reduce the availability of important food sources, such as dandelions, which are a major source of nectar at the beginning of the season.

Habitat loss also makes these problems worse. Housing development, intensive agriculture, and road construction have reduced the amount of natural land available for bees to nest and find food. The loss of these habitats reduces the ability of bee populations to cope with extra stress caused by heat and chemical exposure, worsening the impact of their naturally brief lifespans.

Why It Matters Beyond the Garden

The number of European wild bee species considered at risk of extinction has increased from 77 in 2014 to at least 172 now, about 10% of the total species assessed. Bees pollinate an estimated 75% of global crops and play a significant role in pollinating nearly 90% of flowering plants.

Dittrich suggests leaving the herbicide out when dealing with dandelions, letting parts of the lawn grow uncut, planting native species, and exploring non-chemical pest-control options first, using chemical treatments sparingly. For a bee struggling on hot pavement, a mixture of two parts sugar to one part water can help revive it. If it is safe to do so, people can also move the bee to a shady spot or flower.

While these measures will not eliminate the wider pressures affecting bumblebees, they can reduce some of the stressors that make it harder for them to survive. As temperatures rise and habitats keep changing, it will become more important to ensure that bees have reliable sources of food and shelter.

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.

Astronomers searching for extraterrestrial intelligence have traditionally focused on a specific, narrow band of the radio spectrum. However, a new survey presented at the Royal Astronomical Society‘s National Astronomy Meeting (NAM2026) in Birmingham suggests that this approach may overlook a significant portion of the available frequencies.

The frequencies most often investigated by SETI (Search for Extraterrestrial Intelligence) programs are those between 1.42 and 1.66 GHz. This range, known as the ‘water hole’, is situated between the natural radio emissions of hydrogen and hydroxyl, the two molecules that make up water. Astronomers have regarded this quiet section of the spectrum as a reasonable place for interstellar communication, because any civilization acquainted with these molecules would probably also decide to send and receive signals in search of in that specific region.

Louisa Mason, who is carrying out research as a PhD student at the University of Manchester, focused on investigating frequencies outside the water hole range. To carry out the first SETI survey with that telescope, she used archived data from the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile. She analyzed data originally collected for other astronomical studies instead of requesting new observation time.

Hunting for Signals in Unclaimed Territory

Mason focused on two narrow frequency bands in the ALMA Band 3 data, looking for narrowband signals that might be the result of technology rather than natural astrophysical origins. In the four observations that she examined, she did not discover any candidates for technosignatures above her detection threshold.

“For decades, SETI searches have concentrated on a relatively small part of the radio spectrum. We wanted to ask what might happen if we looked somewhere very different,” Mason said. “The millimetre and submillimetre radio bands remain almost completely unexplored for SETI, so this is really about opening up a new area of parameter space to search.”

A lack of results does not rule out the possibility of alien transmitters. It only means that none appeared in this specific region of the sky and frequency range. Mason describes the survey as a proof of concept, showing that high-frequency telescopes like ALMA could play a much larger role in future SETI efforts.

A Much Bigger Haystack Than Anyone Realized

The research also revealed a gap in how astronomers count the stars they have actually examined. Each time a telescope observes a single target, it also collects light from many other stars in the same field of view. Researchers refer to this as “stellar bycatch.”

Previous SETI surveys have made this bycatch estimate based on the Gaia catalog, which is the European Space Agency‘s survey of the stars. However, Gaia has certain limitations such as its magnitude cutoffs, uncertainties when measuring distant stars, and difficulties in crowded areas. To overcome these limitations, Mason used the Besançon Galactic Model, a simulation of the Milky Way’s stellar population that includes stars that are too faint or too far away for Gaia to detect.

When Mason applied the model to a previous survey of 1,327 telescope observations, the estimated number of stars observed increased from about 288,000 with Gaia to over 6.1 million with the galactic simulation.

“One of the most exciting things about this work is realizing that we’ve surveyed many more stars than initially thought,” Mason said. “Even a very small observation can contain a huge number and diversity of stars that we might never have intended to study. By combining high-frequency observations with galactic simulations, we can better understand exactly what we’ve searched and where we should look next.”

Recommendations for SETI

Mason carried out this research in collaboration with Professor Michael Garrett, Dr. Andrew Siemion, and Dr. Kelvin Wandia. The team argues that expanding both the radio frequencies searched and the number of stars included could reduce the influence of human assumptions on SETI strategies. Whether these broader searches will detect technosignatures missed by traditional water-hole surveys remains unknown.

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.

In May 2024, the strongest geomagnetic storm in two decades pushed the Northern Lights far enough south to become visible across much of the UK and beyond. Now, a study that appeared in Royal Society Open Science reveals that the incident also exposed important gaps in how the UK monitors and prepares its power grid, satellites, and aviation for future extreme space weather.

The storm reached a G5 rating, which is the highest level on the geomagnetic storm scale used by NOAA, as a result of five coronal mass ejections reaching Earth within a period of two days. Researchers with the Space Environment Impacts Expert Group (SEIEG) stated that although the storm caused only relatively minor disruption, it revealed shortcomings in the UK’s capacity to monitor and prepare for more severe space weather events.

The SEIEG then made 14 recommendations to the UK government addressing matters such as grid monitoring, satellite operations, and space weather forecasting. Richard Horne, chair of SEIEG and head of space weather at the British Antarctic Survey, recently gave a presentation on the findings at the Royal Astronomical Society’s National Astronomy Meeting in Birmingham.

A Storm That Tested the Limits

Researchers estimate that the May 2024 storm was a one-in-13-year event. By contrast, a Carrington-class storm, like the 1859 event that defines the standard for extreme space weather, has about a 1% chance of occurring in any given year. This means that a much more disruptive storm is still possible. The SEIEG report uses the 2024 storm as a practical example to assess how prepared the UK is for a more severe event.

“The Northern Lights were the most visible sign of the May 2024 storm, but they were only one part of a much broader space weather event that tested the UK’s critical infrastructure. The storm highlighted where we need better monitoring, better forecasting and more research so we’re prepared for a more severe event in the future,” Horne said.

The Blind Spot in Britain’s Power Grid

Geomagnetic storms create electric fields at Earth’s surface that can drive geomagnetically induced currents (GICs) through long conductive systems, including power transmission networks. High levels of GICs can overheat transformers, disrupt their normal function, and in severe cases cause damage that may lead to failures across parts of the power grid.

Currently, there are no GIC monitors in operation in England or Wales. The SEIEG report recommends establishing a network of monitors to assess how much current various transformer designs can tolerate before sustaining damage.

New Zealand as the Model

The report cites New Zealand as an example of effective monitoring. Since it is at a similar geomagnetic latitude, the country faces similar space weather risks, and its grid operators monitor around 93 transformers across 28 substations. Unlike in England and Wales, where monitoring is absent, these operators have verified their models using actual measurements and implemented operational mitigation procedures during the May 2024 storm.

Crowded Skies, Rising Risk

The storm also affected satellites in orbit. Almost 5,000 satellites adjusted their orbits during the storm. Satellites licensed in the UK saw their number of collision warnings rise by 35%. Since there are now so many objects in low-Earth orbit, a serious storm could raise the risk of collisions, possibly resulting in debris and causing additional incidents.

Preparing for Future Storms

SEIEG also recommends improving forecasts of coronal mass ejections and solar energetic particle events to provide two to three hours of warning before severe geomagnetic storms reach Earth. Improved forecasts could allow grid operators, satellite controllers, and airlines to take protective measures before severe geomagnetic storms arrive. 

“One of the biggest lessons from the May 2024 storm is that we still have important gaps in our monitoring and understanding of how severe space weather could affect UK infrastructure,” said Horne. “We were fortunate that this was not a one-in-100-year event. We now have an opportunity to strengthen our monitoring, improve our forecasts and make sure the UK is better prepared before a much larger storm occurs.”

The 14 recommendations are now under review by the UK government. Whether these steps will be taken before a Carrington-scale storm occurs remains uncertain. With this extreme class of storms remaining a realistic possibility, the researchers argue that improving monitoring and forecasting now could reduce the impact of a future extreme event.

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.

When the brain tracks time, it must decide whether its regions should rely on a shared timing signal or tack time separately. A recent study in Nature Communications provides evidence that the brain uses both approaches, switching between them depending on the situation.

A group at the Institute of Science Tokyo simultaneously measured the activity of thousands of neurons in two mouse brain regions and found that the areas sometimes shared timing information but maintained more independent representations at other times. The researchers, led by Associate Professor Riichiro Hira, maintained that this flexibility enables the brain to remain stable as it adapts to changing requirements.

A Task Built to Catch the Brain Switching Modes

Hira’s team created a task to highlight this timing mystery. They trained mice to expect rewards at intervals that switched between 6 and 12 seconds, without any break to mark the end of one trial and the start of the next. Since there was no pause, the mice had to keep updating their internal sense of time throughout the experiment, instead of resetting their mental stopwatch for each new trial.

The mice eventually figured out the pattern. At first they expected a reward every six seconds even if the time they had to wait was longer than this, but by the end of the training session, their behavior indicated that they had learned to anticipate both reward intervals. This showed that the mice were capable of keeping track of both durations and of predicting which one would come next.

While the mice performed the task, the researchers recorded activity in their secondary motor cortex and the posterior parietal cortex using wide-field two-photon calcium imaging. Both regions play key roles in planning, prediction, and working memory.

Two Regions, Two Kinds of Mistakes

The neurons fired in sequence in each brain area, with different cells becoming active at different times. This sequence showed that each region was monitoring the passage of time.

The researchers also identified two kinds of errors in the neural activity. In some cases, both areas made the same mistake when assessing the passage of time. These coherent errors suggested that both regions sometimes shared the same timing drift. In other instances, only one region was inaccurate while the other remained correct. These independent errors suggested that one region could temporarily maintain a different timing representation from the other. Independent errors were more frequent than coherent ones, and this ratio remained the same in all the mice examined.

If the brain regions were just randomly out of sync, you’d expect the ratio to change. However, it didn’t, which suggests that the brain has a built-in way to balance working together and working independently.

Modeling the Switch Between Coherence and Independence

To identify this mechanism, the team built a computational model with two recurrent neural networks linked by sparse, long-range connections and exposed to the same background noise. The model produced the same 2-to-1 ratio of independent to coherent errors seen in the mice.

The model also discovered that the limited connections between the networks tended to cause them to become synchronized, while the common noise caused them to move in separate directions. Hira provided an explanation of the interaction saying, “We found sparse inter-regional connectivity promotes synchronization between the two regions, whereas widespread fluctuations prevent complete synchronization, allowing each region to preserve its own temporal representation.” Neither force takes precedence; instead, a compromise is reached which allows communication between the regions.

The findings challenge the idea that brain regions rely on a single synchronized timing system. It indicates that the brain can adjust how different parts are coordinated, rather than just turning that coordination on or off.

What a Flexible Clock Could Mean for the Brain

Hira’s team believes that there are implications beyond simple timing circuits. “In the future, our results may contribute to a better understanding of cognition, neurological disorders involving disrupted inter-regional coordination, and the development of brain-inspired artificial intelligence and robotic control systems that combine stability with flexibility,” said Hira.

This last idea may prove most important in the years ahead. Engineers building AI and robotic systems face a similar challenge: how to let separate parts work on their own when needed, yet still come back into sync. The mouse brain shows that sparse connections and shared background fluctuations can achieve this balance. This could point to a design principle that even applies to systems with no biological components.

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.

Recent research from North Carolina State University, published in Parasites & Vectors and Royal Society Open Science, suggests that localized mosquito-control practices may create conditions that favor the evolution of insecticide resistance in mosquito populations.

Aedes albopictus, commonly known as the tiger mosquito, is an invasive species that has become widespread across much of the eastern United States. It breeds in a variety of artificial and natural containers that collect standing water, such as gutters and buckets.

In North Carolina, control of this mosquito is often managed at the household level, either through private mosquito-control services or by individuals applying pyrethroid insecticides. These chemicals are widely used because they are effective against adult mosquitoes and considered among the safer insecticides for use around people, pets, and homes, but they are typically applied without coordination among neighboring properties.

Modeling Mosquito Mutations

In one study, a team led by Jennifer Baltzegar tracked the emergence and spread of a resistance mutation known as F1534S in tiger mosquitoes in Wake County between 2016 and 2024. They looked at the F1534S mutation, which researchers have associated with knockdown resistance.

The mutation was absent from the Wake County samples collected in 2016 and 2017. In 2023, the researchers detected the resistance-associated mutation in 84% of the sampled residential areas, and they found it in 39% of the mosquitoes they sampled. The researchers’ models indicated that the resistance allele was under strong selection pressure, meaning mosquitoes carrying it had a significant evolutionary advantage in the local environment.

“Homeowners with money will pay to spray for mosquitoes, which selects for localized resistance,” said Martha Burford Reiskind, associate professor of biological sciences at NC State and corresponding author on both papers. “Over time, as more and more resistance builds up in the population, it will become harder to control populations. The insecticides will no longer be as effective.”

Wealth as a Selection Pressure

A second study, led by Cole Butler, looked at how resistance is distributed across neighborhoods with different property values. The team sampled mosquito populations across 31 residential blocks throughout Raleigh, covering a range of property values. They found that neighborhoods with higher total property values, which the researchers used as an indicator of likely spending on pest control, showed higher frequencies of resistance. While the study did not track individual spraying habits, the pattern suggests that greater private investment in mosquito control may be contributing to the spread of resistance.

That pattern breaks from how insecticide resistance usually spreads globally. “We see the rapid rise of pesticide resistance in places like South America and Asia where there is continuous spraying in some countries,” Burford Reiskind said. “But resistance driven by private mosquito control is novel in the contiguous U.S., to our knowledge.”

How the Mutation Actually Works

The F1534S mutation occurs in the mosquito’s gene for the voltage-gated sodium channel, which is the same site where pyrethroid insecticides act. This genetic alteration decreases the mosquito’s sensitivity to pyrethroids and thus enables some individuals to survive exposure to insecticides. The resistance allele is only partially recessive, so not all mosquitoes display the full effect. As a result, the mutation can spread through a population before resistance is noticeable.

“This mutation is often the first to show up when there’s insecticide resistance,” Burford Reiskind said.

Where the Research Goes Next

Beyond being a nuisance, tiger mosquitoes can transmit diseases such as dengue, Zika, chikungunya, and dog heartworm. While the current studies did not assess disease transmission directly, Michael Reiskind, a professor at NC State and co-author of both papers, notes that future research will expand to include a broader range of neighborhoods. “We want to make a better effort to get a diversity of neighborhoods, age, and wealth to extend our findings and see whether they work at different housing densities and wealth levels,” Reiskind said.

The researchers recommend using integrated pest management techniques since these methods decrease the need for chemical insecticides. They stressed that eliminating standing water where larvae develop is a key preventive measure. Effective pest control means addressing the entire life cycle and not depending just on chemical insecticides.

Putting these integrated approaches into practice may be challenging since many suburban homeowners already rely on seasonal mosquito-spraying services. The rapid development of resistance in Wake County suggests that managing this trend will likely require cooperation among homeowners, pest control companies, and public health agencies. Achieving that cooperation may require these groups to rethink how they manage private mosquito control.

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.

At the site of Gradište, close to the village of Mlado Nagoričane, archaeologists from North Macedonia have uncovered what they believe was a ritual dining complex associated with a Hellenistic sanctuary, providing new evidence of elite religious practices and extensive trade connections more than 2,300 years ago.

The discovery was made this year as part of an excavation campaign carried out by the National Institution Museum of Kumanovo.

This campaign focused on the Lower Terrace of the settlement. Earlier excavations had already uncovered rock-cut structures dating from the fourth century BC, stone features similar to tumuli, and a series of ritual deposits. The current excavation builds on this previous work and supports the view that the area served as an important religious center rather than a typical residential district.

A Goddess on a Storage Jar

To the east of a previously identified burial mound, the team found the walls of a building full of broken pithoi and other storage jars. One of these jars contained a decorated surface featuring finger-ring impressions showing a female deity.

Archaeologists believe the deity is Demeter, the ancient Greek Olympian goddess of agriculture, the harvest, and fertility, shown holding a cornucopia and pouring a libation from a kantharos onto a tripod. The team sees the imagery as strong evidence that ritual ceremonies occurred at the site.

Feasting in the Shadow of the Sanctuary Wall

In more southern areas, the excavators discovered part of a peribolos wall, a boundary intended to separate the sacred area from the rest of the settlement. Nearby, they came across a small room that archaeologists believe served as a space for ritual dining and symposium-style feasting linked to ceremonies within the sanctuary.

Although the room itself was modest in size, its contents suggest it served an important ceremonial purpose. Archaeologists found large amounts of animal bones, including those of wild boar and goats, suggesting communal feasting formed part of the site’s religious activities. Along with the bones, archaeologists recovered a notably rich assortment of imported Hellenistic tableware, including West Slope gutti, decorated kantharoi, and black-glazed echinus bowls with palmette designs, as well as amphorae, hydriae, additional drinking vessels, lamps, and terracotta figurines.

“The room was most likely associated with rituals performed within the temenos and appears to have been used for ritual dining,” the excavation team said, drawing a direct comparison to the Sanctuary of Demeter and Persephone at ancient Corinth.

A Couch Fit for a Deity

Another significant discovery was the architectural remains of a dining table, together with ornate fragments from a ceremonial dining couch, or kline. The finds include a molded couch leg and an appliqué depicting a reclining deity holding a phiale, a shallow vessel used for libations.

Researchers suggest the figure was part of a wider scene depicting a sympotic procession or a gathering of the gods. Ornaments of this type are uncommon outside of elite Hellenistic burial settings. Archaeologists have previously uncovered similar kline ornaments at wealthy Hellenistic burial sites in Pella and the royal tombs at Aigai.

A Growing Picture of Gradište

For a long time now, Gradište has been yielding very significant discoveries. Previous excavations at Gradište uncovered a peristyle building decorated with painted plaster, along with imported amphorae and finely crafted ceramics. Together with the latest discoveries, the finds suggest the settlement was well connected to the broader cultural and commercial networks of the Hellenistic world.

Future excavations will focus on expanding the newly discovered buildings and determining whether a temple once stood within this part of the sanctuary.

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.

Galaxies, stars, and living cells are all examples of local order emerging in the universe. At first glance, that seems to contradict one of physics’ oldest principles.

However, a recent study in Physical Review D offers a mathematical explanation for how these structures form while still obeying the second law of thermodynamics.

The second law of thermodynamics states that entropy, or disorder, in an isolated system always increases over time. Einstein famously said that “the second law of thermodynamics occupies a unique position among the laws of Nature,” reflecting how fundamental he believed the principle to be.

In its early days, the universe was smooth and uniform, with low entropy. As it expanded, gravity pulled gas into stars, stars into galaxies, and eventually made life possible. Each step seems to create order in one place, even though the universe as a whole became more disordered. Cosmologists have usually explained this by pointing to the universe’s growing volume.

Gravity as a Ledger, Not a Force

Mathematician Ginestra Bianconi at Queen Mary University of London addressed this problem with a framework called Gravity from Entropy. Rather than treating gravity as a fundamental force, the Gravity from Entropy framework proposes that it emerges from an information-based difference between two descriptions of spacetime geometry. One metric describes the actual shape of spacetime, while the other describes the geometry that matter and curvature would create. When these two match, gravity disappears. When they differ, gravity arises from the difference.

In the low-energy, weak-curvature limit, the framework reduces to general relativity. In the new study, Bianconi adds a thermodynamic perspective. She applies Gravity from Entropy to the standard model of an expanding universe and shows that the local geometric degrees of freedom follow the first law of thermodynamics, with their own temperature and pressure emerging from the equations.

Falling Density, Rising Total

One of the study’s central findings is the distinction between total entropy and entropy per unit volume. As the universe grows, the total entropy increases, just as the second law demands. However, the study found that entropy per unit volume decreases over time even as the universe’s total entropy continues to increase. Within the Gravity from Entropy framework, Bianconi proposes that this declining local entropy density may help explain how galaxies and other cosmic structures emerge.

The study also shows that these geometric temperatures change depending on what dominates the universe. In a universe dominated by matter or radiation, the temperature decreases over time. In a universe dominated by dark energy, like our own, they remain nearly constant. The framework even assigns a temperature and pressure to empty spacetime.

A Theory Still Waiting to Be Tested

“This work reveals how the Gravity from Entropy theory can tackle the challenging question of reconciling the second law of thermodynamics with the emergence of complexity in our universe,” stated Bianconi. “These results may open new avenues for investigating the long-standing problem of reconciling the foundations of cosmological irreversibility, the emergence of complex structures, and ultimately life with fundamental gravitational dynamics.”

So far, Gravity from Entropy has not been confirmed by observations. The theory makes predictions that future observations of large-scale cosmic structures and other gravitational phenomena could test. While it remains unproven, Bianconi believes it could offer a new way to link gravity, thermodynamics, quantum mechanics, and the rise of complexity in the universe.

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.

For decades, scholars have debated whether the Qumran sect associated with the Dead Sea Scrolls actually used its unusual 364-day calendar, or viewed it as more of a theoretical ideal.

Now, a new study published in the Tarbiz Quarterly for Jewish Studies suggests that neither explanation is fully accurate. Instead, Prof. Eshbal Ratzon argues that the community used the calendar for a time before seasonal drift and changing Hasmonean politics prompted them to abandon the system.

A Calendar as a Religious Statement

Ratzon, a professor at Tel Aviv University, set out to answer a question that has puzzled scholars for decades. Unlike the approximately 365.25-day solar year, the Qumran calendar consisted of exactly 364 days. The calendar used 364 days because the number divides evenly into 52 seven-day weeks, so every festival would always fall on the same weekday each year.

To the Qumran sect, this order in the calendar demonstrated what they saw as God’s perfect design. They believed God set the calendar at Creation and that people could not change it. This belief clashed with Jerusalem’s religious leaders, whose priests used a lunisolar calendar that most Jewish people followed during the Second Temple period.

Reading the Evidence Differently

The mathematics that gave the calendar its perceived order also led to practical issues. A 364-day year lags behind the solar year by about a day and a quarter each year, causing festivals to drift by nearly a month over two decades. After several decades, a spring harvest festival could fall in winter. For a group that linked its holidays to agriculture, this gradual shift was a serious problem.

Two main theories have shaped the debate for years. One suggests that the sect occasionally added extra days to correct the drift, while the other argues that the 364-day calendar was only a theoretical model and not used in daily life. Ratzon argues that the Dead Sea Scrolls do not clearly support either view. Nearly twenty of the recovered scrolls concern calendars or astronomy, highlighting the importance of the subject within the community. The Book of Jubilees, a key text for the sect, goes further by criticizing the lunar calendar and presenting the 364-day system as the original calendar given to Moses at Sinai.

“The Qumran calendar has long been regarded as one of the Qumran sect’s defining features, but also as one of the most baffling mysteries of the Dead Sea Scrolls,” Ratzon said.

Why the Sect Moved On

Ratzon’s reconstruction sees the abandonment of the calendar as a two-stage process, rather than a single failure. The growing seasonal drift made the calendar increasingly impractical. At the same time, the sect’s relationship with the Hasmonean rulers improved under Alexander Jannaeus, who supported religious decisions closer to the sect’s views and disagreed with the Pharisees who led the Temple in Jerusalem.

According to Ratzon, improving relations with the Hasmonean rulers made it possible for the sect to adopt the Temple calendar for daily use, while still holding the 364-day system as an ideal. They believed it was valid at Creation and would be restored in the future.

The debate over the Qumran community has continued for decades. While Ratzon’s proposal does not settle that debate, it offers a new explanation for how a calendar once central to the sect’s identity could eventually become more of a religious ideal than a practical system.

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.

A predatory sea worm known as Perinereis cultrifera possesses jaws that do not fit neatly into either biological or metallic categories. These jaws consist of structural proteins reinforced with metal ions, giving them mechanical properties unlike those of either conventional metals or ordinary biological tissue.

This unique combination of composition and mechanical behavior led researchers from TU Wien and the University of Vienna to propose an entirely new material classification. In a recent paper published in Biophysics Reviews, the team suggests that the creature’s jaws represent a distinct class of material, which they term bio-metal.

The jaws of bristle worms such as P. cultrifera are formed by linking structural proteins with metal ions, producing a material tough enough to crush and bite prey. Previous studies called these tissues metallike biomaterials, meaning they share some properties with metals, like strength or conductivity. The new study argues that this term is too broad. According to the researchers, a true bio-metal must meet three criteria: it must be hard, display specific strain mechanics, and have a well-defined ion-protein structure.

Hardness With a Metal Signature

To test if the jaw met these criteria, the researchers used nanoindentation, which means pressing a tiny probe into the tissue to measure its properties. They also conducted chemical tests and imaging at the same time. The results confirmed earlier findings that the jaw tips contain higher concentrations of metal ions than the center, likely making the tips harder.

When the probe pressed into the jaw at different depths, the researchers observed something called the Nix-Gao size effect. This effect, seen before in metals like copper and silver, means that smaller areas resist deformation more than larger ones. The reason is that strain gradients become larger in smaller regions, increasing resistance to deformation. Finding this metal-like behavior in worm jaws is one reason scientists have compared the material to metals.

Where the Metal Comparison Breaks Down

However, the jaw does not behave exactly like metals such as copper. Its elasticity changes depending on the size of the area tested, which is not seen in crystalline metals.

“Bristle worm jaws also showed size-dependent elasticity — this is a distinguishing feature of bio-metals when compared to standard crystalline metals like copper or silver,” said Christian Hellmich, one of the paper’s authors. Copper and silver can show a hardness size effect, but neither exhibits the size-dependent elasticity that the team measured in the worm jaw. That distinction is one reason the researchers argue that these materials deserve their own category.

To explain this property, the researchers built a mathematical model showing how the jaw’s atomic structure leads to the elastic size effect. This model helps explain the effect and gives a basis for future research.

“We plan to extend the experimental database by investigating additional species to refine the theoretical concept and perform dedicated computations, and — perhaps most interestingly — to explore the link between genetic interventions and the corresponding material design space,” Hellmich said. “All this comes with true excitement about the beauty, elegance, and refinement found in and produced by nature.”

Next, the researchers plan to explore how genetic changes influence the development of these materials. If successful, the work could eventually help engineers develop new biomimetic materials inspired by the ion-protein architecture found in these worms.

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.

Some of the most promising locations to search for possible alien megastructures, known as Dyson spheres, may not be stars like the Sun, but rather the galaxy’s smallest and dimmest stars.

Physicist Freeman Dyson introduced the idea of a Dyson sphere in 1960, describing it as a shell or, more realistically, a swarm of orbiting collectors that could capture most of a star’s energy. This concept has interested scientists searching for signs of advanced technology, but the question of how such a structure would appear in astronomical observations remained unknown.

Now, a new study, available on the arXiv preprint server, suggests that one of the coldest objects in a stellar system could, in principle, be an artificial megastructure rather than a natural astronomical object.

Amirnezam Amiri, a physicist at the University of Arkansas, explored the question of Dyson spheres by modeling these hypothetical megastructures around two often-overlooked types of stars: red M-dwarfs and white dwarfs. Amiri credits discussions with Harvard astronomer and founder of the Galileo Project, Avi Loeb, with helping shape the study.

Small, Dim, and Built to Last

Red dwarfs make up about 70% of the stars in the Milky Way. These stars burn slowly and can remain stable for trillions of years, much longer than the universe has even existed so far. White dwarfs offer a different benefit. As the dense remnants of stars like the Sun, they shrink to about 1% of their original size. This means a Dyson swarm could orbit much closer, requiring less material and a smaller structure than one built around a star like the Sun.

Amiri’s study explores how astronomers could detect such structures. Both red dwarfs and white dwarfs are dim enough that the infrared heat emitted by a Dyson swarm would stand out more clearly against the star’s own light.

Reading the Wreckage on a Star Chart

Astronomers use the Hertzsprung-Russell diagram to classify stars by temperature and brightness, and this tool is central to Amiri’s analysis. A Dyson swarm would not destroy a star’s energy, but would capture its light and re-emit it as heat at much longer wavelengths. 

In the new model, a star with a Dyson swarm would appear on the H-R diagram at the same luminosity but shifted dramatically toward the cool end. For instance, a red dwarf at about 3,000 K could appear surrounded by a shell as cold as 50 K, a difference of about two orders of magnitude. No known stars naturally occupy this region of the H-R diagram.

Identifying Factors

Dust and distant galaxies can also produce strong infrared emissions, so astronomers cannot identify a Dyson swarm using temperature alone. Amiri’s model points to a more complex set of clues. A true Dyson swarm would not show the silicate dust features seen in normal dusty disks, so its spectrum would be unusually smooth for an object with strong infrared emission.

Additionally, if the swarm consists of many separate collectors rather than a solid shell, there would be gaps that cause irregular, non-stellar flickering as the pieces move. Each of these signs can have natural causes, but finding them together is rare and hard to explain without considering artificial structures.

Future Observations

Astronomers can carry out this search using existing telescopes. The James Webb Space Telescope’s infrared instruments are already designed to detect faint, cold signals like these. The Vera C. Rubin Observatory’s new sky survey and the Nancy Grace Roman Space Telescope, which is expected to launch later this year, will add to these efforts. Together, they will generate the kinds of observations needed to search for the signatures described in the study.

Possible candidates for these future observations have already been identified. In 2024, Project Hephaistos identified seven potential Dyson sphere candidates among about 5 million cataloged stars, all linked to red dwarfs. One was ruled out after it was shown that a background black hole caused the observed signal. Several candidate Dyson sphere systems still remain under investigation. Amiri does not claim that any of these are actual Dyson spheres, and the paper makes this clear. Instead, the study offers a better way to tell true anomalies apart from dusty disks before using valuable telescope time. If a Dyson swarm surrounds a star and reradiates its energy at temperatures unlike those of natural stars, upcoming infrared surveys may finally be able to detect one.

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.

Paternal care is uncommon among several wild animal species, even among arthropods—the invertebrates that include insects, arachnids, and crustaceans.

Now, in a recent study in the Zoological Journal of the Linnean Society, harvestmen—also known as daddy longlegs—account for more than half of all independently evolved cases of paternal care currently documented among arthropods.

The news insights were made possible by a recent citizen science effort that significantly increased the available data about these paternal behaviors in arthropods, all within days.

Built for Fatherhood

Harvestmen are one of the most diverse arachnid groups, with more than 6,900 described species. Despite making up just 0.6% of arthropod diversity, they show more independent origins of paternal care or egg guarding than any other arthropod lineage. This concentration of paternal care makes harvestmen a key group for studying the evolution of this behavior.

Led by Glauco Machado at the University of São Paulo, the research team combined almost thirty years of fieldwork with a review of iNaturalist, a public website for sharing nature sightings. From 1936 to 2025, published studies had found parental guarding in only 80 harvestman species. However, the iNaturalist search added 85 new records: 78 showing parental care and seven showing no care, more than doubling the number of harvestman species with available behavioral data.

Machado was surprised by how quickly the platform produced results. “It’s a tremendous source of information that can improve the velocity with which we accumulate biological information,” he said. “I would never be able to do this by visiting museums around the world. It would be very expensive, very time-consuming, but here we conducted the search in only one week.”

The Evolution of Fatherhood

With the expanded dataset, the researchers were able to map parental behaviors onto a newly constructed evolutionary tree encompassing 165 species across nine families. This represented the first reconstruction of how both maternal and paternal care evolved within the superfamily Gonyleptoidea. The findings challenge the assumption that caregiving behaviors follow a single evolutionary pathway.

The analysis found that maternal care evolved only from ancestors that did not provide care, a pattern also seen in insects. Paternal care, however, appeared in two ways: once from ancestors with no care, and once from species where females already guarded eggs. This difference suggests that separate evolutionary pressures shaped the development of parental care in harvestmen.

Machado suggests that sexual selection may have driven the evolution of paternal care from maternal care. In this scenario, which the researchers describe as enhanced fecundity, females favor males that are already tending eggs.

“It’s very rare in nature, paternal care, and this behavior evolved many times independently,” Machado said. “In many species where males care for the offspring alone, the caring activity is a sexually selected behavior, which means that females prefer males that are caring for the eggs.”

The evolutionary tree also showed that parental care does not always persist across lineages. Several groups appear to have lost caregiving behavior over evolutionary time. Some harvestmen now use easier methods, like hiding their eggs or burying them under debris, to protect them without having to stay and guard them.

Limitations of Citizen Science

Machado emphasizes that experts remain essential to this process. It takes specialized knowledge to correctly identify species, tell the sex of the guarding animal, and tell real parental care apart from similar behaviors such as mate-guarding. “I think taxonomists’ role in modern science is more important than ever,” he said. “We cannot preserve a species that doesn’t have a name. And names are provided by taxonomists.”

Additionally, animals that are actively guarding eggs are more likely to be photographed than those not showing any behavior, which could make active parental care seem more common than it really is.

What Comes Next

Machado views this approach as a model for future research. More than half of the new records came from individuals without formal training in arachnology, and he anticipates similar results as researchers apply iNaturalist to other animal groups for which parental care remains poorly documented.

“I think it’s a very broad contribution for people that are working with insects, frogs, and all kinds of groups, animal groups, in which we have both maternal care and paternal care,” he said. The next mystery solved through citizen science may not involve arachnids at all.

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.