Italian archaeologists have discovered a previously unidentified, nearly 4,000-year-old “Tomb of the Giants,” or “Giant’s Tomb,” at Carrarzu Iddia in central-western Sardinia.

The researchers behind the historic discovery said the new structure is part of a larger group of ancient, ‘enigmatic’ burial complexes on the island known as Giant’s Tombs erected by the Nuragic civilization as collective burial sites beginning around 1800 B.C. due to their megalithic structure.

Giant’s Tomb Site Features a Strategic Placement

According to Finestre sull’Arte, the newly discovered Giant’s Tomb had been covered by thick vegetation, helping it to remain hidden for nearly four millennia. However, surveyors from Sardinia’s two Superintendencies of Archaeology, Fine Arts, and Landscape were already involved in the restoration and excavation of the nuraghe located at the same site when they made the unexpected discovery.

Located at an elevation of approximately 800 yards, the newly identified Giant’s Tomb is located on the southern slope of Crastu Littu. The Italian team suspects the site “is of particular interest” due to its strategic location.

For example, the Giant’s Tomb offers a sweeping view of the Macomer plain. The location also includes a clear vantage point to observe the highlands of Abbasanta and Paulilatino, and an unobstructed view as far as the hills of the Nuoro area and the Gulf of Oristano. The team said this view likely conveys the site’s importance within the wider settlement network of Nuragic Sardinia.

Clearing the Dense Vegetation Reveals Striking Details

After identifying and surveying the new Giant’s Tomb’s location, the two project leaders worked with the landowners to clear away the dense overgrowth and earthen debris that had kept it hidden. Ironically, once the site was fully revealed, the team noted that the covering had likely helped to maintain and preserve its excellent condition over the nearly 4,000 years since its construction.

The most prominent features identified on the vast site were two large stone platforms, called protonuraghi, a sacred well, a residential settlement, and an extensive burial ground. A closer examination confirmed that the Giant’s Tomb, which is made from trachyte blocks, retained the expected architectural elements found in similar collective burial sites.

One identifying feature is the site’s exedra preceding its entrance. According to the Italian team, this architectural component is one of the most representative aspects of previously identified Giant’s Tombs, distinguishing this “monumental” construction type clearly within that of protohistoric Sardinia

Unfortunately, the excavation revealed that some portions of the ancient site had not survived the intervening four millennia completely intact. The authorities suspect that past illegal excavations that have affected many ancient sites could be part of the cause.

Luckily, previous illegal invasions of the site did not remove everything of historical value. For example, the team found ceramic materials inside the structure that document human occupation of the site, in some cases dating back to the earliest stages of the Nuragic civilization.

Site Includes Rarely Documented Dual-Level Construction

Alongside the site’s more familiar features, the team also identified an internal feature they described as ‘rare’ for a Giant’s Tomb: a second level near the entrance. Future studies of this unusual feature may offer insights into this society’s funerary practices and its construction techniques, which the team notes are still poorly understood.

The Italian team also noted the site’s greater significance when within the larger archaeological context of Carrarzu Iddia, noting that the area has yielded traces of human use and occupation covering the times before, during, and after the Roman era.

When discussing the site’s historical significance, the Italian team pointed to the value of so many extraordinary structures and monuments concentrated within one specific area. This overlap allows researchers to chronologically date the new Giant’s Tomb and place its significance within the wider context of the Island’s inhabitants.

Christopher Plain is a Science Fiction and Fantasy novelist and has spent the last six years as Associate News Editor and Head Science Writer at The Debrief. Follow and connect with him on X, learn about his books at plainfiction.com, or email him at christopher@thedebrief.org

A material that normally blocks the flow of electricity can suddenly begin behaving like a metal when exposed to remarkably weak light, according to a new experiment involving one of the strangest forms of graphene ever created. The breakthrough reveals that an unusual quantum effect could eventually provide a new way to detect some of the faintest radiation around us.

Researchers working with “magic-angle” twisted bilayer graphene found that faint, long-wavelength radiation can effectively melt the material’s fragile correlated insulating state, causing its electrical resistance to plummet. Remarkably, the experiments showed that even relatively weak radiation could trigger a dramatic transition from an insulator to a metal.

Beyond revealing an unusual way that light can manipulate matter, the discovery could provide the foundation for extremely sensitive detectors capable of spotting faint terahertz and far-infrared radiation.

With further development, detectors operating at these wavelengths could have applications ranging from security imaging and material inspection to astronomy and environmental sensing.

The study, published in Nature Communications, centers on magic-angle twisted bilayer graphene, or MATBG—a material produced by stacking two sheets of graphene and rotating them relative to one another at a carefully controlled angle.

Under the right conditions, interactions between electrons can cause magic-angle graphene to enter exotic collective states, including superconducting and insulating phases.

“Here we show that this expectation does not apply to magic-angle twisted bilayer graphene (MATBG) and demonstrate giant photoresponse of MATBG to low-intensity long-wavelength photons when it is tuned to half filling of the moiré band,” researchers write. “Far-infrared photons selectively overheat the low-heat-capacity electronic subsystem, driving a collapse of the correlated order and producing a giant photoresistive response.”

Ordinarily, changing an insulator into a conductor with light requires supplying enough energy to alter how electrons can move through the material fundamentally. Previous experiments involving light-induced insulator-to-metal transitions have frequently depended on intense, ultrafast excitation.

Magic-angle graphene offers another route.

Twisting graphene sheets at carefully controlled angles creates a larger repeating structure known as a moiré superlattice, dramatically changing how electrons within the material interact. Those interactions have already produced some remarkable results.

As The Debrief reported last year, researchers studying magic-angle twisted trilayer graphene uncovered new evidence of unconventional superconductivity, including unusually tightly bound electron pairs and a distinctive superconducting energy gap.

That work was part of a greater effort to understand whether these exotic materials could eventually help scientists design superconductors capable of operating at much higher temperatures.

In the new study, researchers exploited another unusual state that can emerge in magic-angle graphene. At certain electron densities, interactions between electrons become unusually important, allowing them to organize into what physicists call a “correlated insulator.”

That collective state is extremely fragile. The correlated insulating gap exists at an energy scale of only a few millielectronvolts. Previous measurements cited by the researchers indicate that a gap of approximately 1 millielectronvolt at very low temperatures gradually closes as the material warms and disappears around 10 kelvin.

The researchers realized that weakness could become an advantage.

Their experimental device consisted of magic-angle graphene sandwiched between layers of hexagonal boron nitride and configured as a field-effect transistor. A graphite back gate allowed them to precisely control the number of charge carriers and tune the graphene into its correlated insulating state.

They then exposed it to millimeter-wave and far-infrared radiation.

Instead of needing to inject large numbers of charge carriers, the incoming photons heated the graphene’s low-heat-capacity electronic system. That relatively small temperature increase was enough to destabilize the cooperative electronic order, retaining the insulating state.

The gap collapsed, resistance dropped dramatically, and the material became metallic.

Measurements in darkness and under illumination reinforced that interpretation. Without radiation, the graphene displayed the temperature-sensitive resistance expected from an insulator. Under millimeter-wave illumination, it instead exhibited behavior representative of a metal.

Researchers compare the mechanism to superconducting bolometers, highly sensitive radiation detectors in which incoming energy interrupts a superconducting state. But their graphene device essentially operates in reverse: instead of destroying a zero-resistance state, approaching photons destroy a high-resistance correlated insulating state and turn it metallic.

That makes the insulator-to-metal transition more than an unusual demonstration of quantum physics. It becomes the detector’s signal.

The team found that the device responded across wavelengths ranging from 85 to 2,140 micrometers, encompassing far-infrared and millimeter-wave radiation.

That portion of the electromagnetic spectrum is particularly interesting because it can reveal things ordinary cameras cannot. Terahertz radiation can penetrate some materials opaque to visible light, while interactions between this radiation and matter can provide information about a material’s composition.

More capable detectors could therefore eventually contribute to technologies such as security scanners looking for concealed objects, systems inspecting manufactured components without cutting them open, or sensors identifying substances using characteristic spectral markers.

Astronomy offers another potential application. Cold dust, star-forming regions, and other objects that may be faint or obscured at visible wavelengths emit radiation in the far-infrared. Detecting those extremely weak signals requires exceptionally sensitive instruments, making improved detector technology valuable for future astronomical observatories.

The experimental graphene detector exhibited considerable intrinsic sensitivity. The researchers measured an internal voltage responsivity of approximately 17 million volts per watt of absorbed power. They note that its internal responsivity exceeds that of many commercial bolometers operating in the same spectral region.

However, researchers caution that practical external performance is presently limited partly by how efficiently radiation is absorbed, meaning the experimental device is not equivalent to a finished commercial detector. Better antennas, cavities, metamaterials, or other structures designed to funnel radiation into the graphene could potentially improve its performance considerably.

There are other hurdles. The effect currently requires ultra-low temperatures, and the unusually strong response depends upon generating high-quality magic-angle graphene structures. Those requirements mean practical security scanners or telescope cameras based on the technology remain prospective rather than imminent.

Still, there are encouraging characteristics. The photoresponse persisted at temperatures around 6 to 7 kelvin and remained robust in magnetic fields of several tesla, with substantial reduction appearing only above roughly 4 tesla. That magnetic-field tolerance could make the technology attractive for specialized scientific instruments where superconducting detectors may meet limitations.

The current device also has an estimated practical response time of roughly 50 nanoseconds, largely because of its electrical design. The underlying electron cooling occurs much faster, and researchers estimate that smaller devices could reduce that practical limit by at least an order of magnitude. They also envision twisted multilayer materials, wafer-scale growth, and large-format detector arrays as potential directions for future development.

For now, the experiment demonstrates that in certain quantum materials, changing electrical behavior does not necessarily require pumping large amounts of energy into individual electrons. Sometimes, a small amount of light only needs to destabilize the collective state that those electrons have constructed together.

For physicists, the discovery offers a new way to investigate how fragile collective states of matter collapse and recover. For engineers, that same fragility could become useful precisely because extraordinarily weak radiation can trigger an extraordinarily large electrical response.

“Our experiments can be further generalized for time-domain interrogation of the CI state itself,” researchers write. “Radiation-driven excitation confined within the flat band, combined with time-resolved monitoring of the CI photoresistance, would allow direct access to the intrinsic timescale of correlated-order suppression and recovery, thereby probing the collective dynamics within the ground state.”

Study: Elesin, L., Shilov, A. L., Kravtsov, M. et al. “Correlated Insulator Moiré Bolometer.” Nature Communications (2026).

Tim McMillan is a retired law enforcement executive, investigative reporter and co-founder of The Debrief. His writing typically focuses on defense, national security, the Intelligence Community and topics related to psychology. You can follow Tim on Twitter: @LtTimMcMillan.  Tim can be reached by email: tim@thedebrief.org or through encrypted email: LtTimMcMillan@protonmail.com 

A University of Warsaw scientist has determined that a series of mysterious stonemason inscriptions on the Tauchira Gate at Ptolemais, on Libya’s northern coast, which have perplexed researchers for centuries, are likely stonemason marks intentionally left visible by the artisans who built the ancient structure.

The new analysis, which was performed by Anna Urszula Kordas of the Faculty of Culture and Arts at the University of Warsaw in Poland, also dates the gate’s construction to the reign of Ptolemy VIII, roughly 2,200 years ago.

If correct, the new dates for the site would help settle a longstanding debate about the gate’s precise age.

Mysterious Stonemason Inscriptions Regularly Misidentified

According to Korda’s research study, archaeologists consider the Tauchira Gate to be the best-preserved section of the ancient fortifications built around the ancient Egyptian city of Ptolemais. Several visitors and scholars have noted the gate over the centuries, with a particular focus on its mysterious stonemason inscriptions.

The earliest documented attempt by a Western researcher to decipher their meaning comes from a French traveler identified as Granger, who recorded the marks sometime between 1733 and 1734. According to Korda, that first attempt mistakenly described the marks as likely instructions for masons to arrange the gate’s stones during its construction.

A second, 19th-century effort inaccurately ascribed the mysterious stonemason inscriptions to donors financing specific blocks. In the 1970’s, another researcher suggested the inscriptions were ‘ephebic’ names added after construction as graffiti “unrelated to the gate’s construction but connected to the functioning of the nearby gymnasium.”

Although the most recent effort dated the inscriptions to sometime during the city’s Roman period, Korda notes that the date is still in debate. She also points out that the meanings of the mysterious stone inscriptions were unlikely to be any of the proposed explanations, motivating the new analysis.

2006 Photos Enable Digital Recreation and Discovery of Techniques

To decipher the mysterious stone inscriptions, Korda said she reconstructed the gate’s construction process, organization, and chronology by applying the “chaîne opératoire approach.” This method allowed Korda to study these variables “within its technological and socio-cultural context.”

Thanks to a series of photographs captured by the Polish Archaeological Mission to Ptolemais in 2006, Korda was able to trace the location of each inscription using digital mapping software. The researcher notes that this process still included challenges, including “damaged stone surfaces, suboptimal picture quality, invasive plants, and later inscriptions,” all of which made some of the actual stone markings illegible. Korda said these limitations also hampered the “observation of stone processing techniques.”

After a thorough initial examination, Korda separated the mysterious stonemason inscriptions into 27 ‘types’ and then split them into two groups. The first group represented marks found on rough, unfinished blocks. These marks were also mostly hidden from view, suggesting they were recorded during a block’s quarrying and transport.

Korda’s second group included inscriptions found on finished, textured outer surfaces of the gate’s two towers. Notably, the second group of markings appeared to be carved with more care than those in the first group.

Mysterious Stonemason Inscriptions Likely Stonemason Marks Identifying Workers and Work

Korda ultimately determined that the inscription pattern represented two distinct systems used to organize and pay for stonemason work. For example, some marks appear to follow a simple letter sequence, which Korda suggests shows how the team was divided for work.

“The stonemasons’ marks on the Tauchira Gate consist of single Greek letters, double letters, ligatures, and elaborate monograms,” the study author writes. “The marks A, Β, Γ, Δ, AP/Ε, Ζ, and Η likely form a letter-label system representing the division of labour among stonemasons’ teams.”

The analysis also revealed some of the mysterious stone inscriptions combine to form complex monograms. Korda said these inscriptions “appear as ligatures or monograms, possibly abbreviating stonemasons’ names.” The inscriptions also likely represent names or workshop owners or private donors who helped fund the project, a common Greek practice during this era.

“The hypothesis presented here is that the marks, especially attested in the lower levels, correspond to the division of stonemasons into seven teams numbered A to H and suggest a well-organized system, possibly financed from public funds,” Korda writes.

One unusual aspect highlighted by Korda’s work was that the mysterious stonemason inscriptions were not hidden during construction, unlike stonemason marks found at other ancient construction sites. The researcher suggests that the marks on the Tauchira Gate being left visible were an intentional act representing a local tradition instead of a wider societal practice.

“Even in the absence of instructive parallels—whether due to lost evidence or gaps in research—it may be inferred that the practice of inscribing rusticated blocks with masons’ or patrons’ names, while inspired by the broader Greek tradition of commemorating benefactors on public buildings, represents a local innovation,” Korda writes, adding that the Tauchira Gate is, therefore, “remarkable for its distinctiveness, as fortifications displaying comparable evidence for labour organization and the public display of stonemasons’ marks remain without close parallels.”

Analysis Includes Early Second Century Construction Date

Along with successfully deciphering the meaning of the mysterious stone inscriptions, Korda’s analysis determined that the gate’s two towers were built at the same time instead of one after another. Kordas said this finding contradicts a 2009 German team that examined the site in person.

Because the gates lack organic material for radiocarbon testing, Kordas dated their construction by comparing the shapes of the letters used in the inscriptions with other inscriptions from the same region that have been conclusively dated. The researcher also factored in nearby graffiti mentioning a visitor from Rhodes, which helped narrow the site to the earlier half of the second century BC.

“The arguments deployed by the epigraphic analysis of the marks on the Tauchira Gate and the evidence of the stonemasons’ marks visible there and presented in the analysis submitted here suggest that the gate was remodeled during the reign of Ptolemy VIII Physcon in the second century BC,” Korda concludes, adding that “at the very least, the hypothesis merits serious consideration.”

The article “Life on a Hellenistic Construction Site: Stonemasons’ Marks on the Tauchira Gate at Ptolemais in Cyrenaica” was published by Cambridge University Press.

Christopher Plain is a Science Fiction and Fantasy novelist and has spent the last six years as Associate News Editor and Head Science Writer at The Debrief. Follow and connect with him on X, learn about his books at plainfiction.com, or email him at christopher@thedebrief.org

Scientists have theorized for decades about how the human brain evolved and grew dramatically in size. Now, new research points to one common ingredient that may have played a crucial role in the brain’s evolution over time: sugar.

A research team at the University of Sydney and the University of Glasgow created a model comparing modern nutrition with that of our ancestors over a span of four million years. The findings suggest that our ancestors relied on naturally occurring carbohydrate-rich foods, which could have played an important role in not only their overall dietary nutrition but also the evolution of the human brain.

These new findings challenge an older scientific model that emphasizes meat as a primary driving force behind human evolution.

“Raw starch does not release glucose, meaning early humans likely relied on naturally sweet foods long before grains became a regular part of the diet,” said lead author Professor Jennie Brand-Miller, Professor of Human Nutrition at the University of Sydney Charles Perkins Center and School of Life and Environmental Sciences, in a statement. 

While meat played a role in our ancestors’ diets, the new research suggests that the amount of energy required by a growing brain also needs to be considered. Throughout human evolution, brain size increased from roughly 300 grams in early hominins to approximately 1,500 grams in modern humans. Glucose is the brain’s primary energy source, creating increasing nutritional demands as brain size grew over time.

“While animal foods were important, the brain’s need for glucose has largely received little attention from anthropologists,” Professor Brand-Miller said.  

The Research

To better understand this hypothesis, the team created a model encompassing six evolutionary stages. Researchers estimated the “obligatory glucose demand” of the brain and other glucose-dependent tissues, including red blood cells, kidneys, and reproductive tissues. They then compared these glucose requirements with the carbohydrate sources that would have been readily available to humans during different stages of evolution.

“The human brain is unusually large for our body size and requires substantial amounts of energy,” Professor Brand-Miller said.  “Glucose is the brain’s primary energy source, and for much of human evolution, would have come from carbohydrates found in foods such as fruit and honey.” 

The model incorporated evidence from numerous fields, including metabolism, food composition, fossil isotope studies, dental morphology, archaeology, primate diets, and genetics.

Overall, the research suggests that early hominins, including Australopithecus, Homo habilis, and Homo erectus, were highly dependent on carbohydrate-rich foods, with fruit representing an important source. Later, as humans began using fire to cook food, starch-rich plants could also provide significant amounts of glucose. Grains, meanwhile, appear to have entered the human diet much later. The researchers point to archaeological evidence of seed grinding dating to around 65,000 years ago.

“People often think of carbohydrates as breads and cereals, but for most of human evolution carbohydrates came from fruits, honey and underground plant foods,” said Professor Brand-Miller. “The earliest evidence of seed grinding is 65,000 years ago, when we see the first evidence of grinding stones to make flour.” 

The study also examined the role of glucose in reproduction and pregnancy. Pregnancy and lactation significantly increase glucose demands, since energy is required not only by the mother but also by the developing fetus and placenta, as well as for milk production.

The new findings may also help explain humans’ longstanding attraction to sweet foods. For much of human evolution, naturally sweet foods such as fruit and honey provided concentrated sources of energy while also supplying fiber, vitamins, minerals, and other nutrients.

That doesn’t mean people should start making a run for the candy aisle. The findings do not suggest that modern humans should consume more refined sugar. Instead, the researchers distinguish between naturally occurring sugars found in whole foods and highly processed foods containing large quantities of added sugar.

Sugar was also not the human brain’s only source of fuel, nor were carbohydrates the sole dietary factor influencing human evolution. Rather, the researchers argue that glucose requirements have often received less attention than other dietary factors, including meat, fat, and protein. Our ancient appetite for naturally sweet, carbohydrate-rich foods, however, may have helped fuel the extraordinary expansion of the human brain.

Chrissy Newton is a PR professional and the founder of VOCAB Communications. She currently appears on The Discovery Channel and Max and hosts the Rebelliously Curious podcast, which can be found on YouTube and on all audio podcast streaming platforms. Follow her on X: @ChrissyNewton, Instagram: @BeingChrissyNewton, and chrissynewton.com. To contact Chrissy with a story, please email chrissy @ thedebrief.org.

European scientists are taking advantage of this week’s solar eclipse to test a potentially groundbreaking instrument that could transform the way astronomers study the Sun.

For weeks, a team from the Astrophysical Observatory of Turin has been stationed at Spain’s Javalambre Astrophysical Observatory, preparing to deploy a novel spectrometer ahead of the August 12 eclipse.

On that date, researchers will activate the Circular Slit Spectrometer (CISS), which the Turin-based team says will provide a unique new view of our life-giving star. Specifically, the device will focus on the corona, the outermost portions of the Solar atmosphere, and the hottest part of the Sun.

The 2026 Solar Eclipse: A Trio of Occurrences

This month, skywatchers will be treated to a trio of celestial events: a solar eclipse and the peak of the Perseids meteor shower on August 12, followed by a lunar eclipse between August 27 and 28. The total solar eclipse will be best viewed from parts of Spain, Portugal, Russia, Iceland, and Greenland, while observers across much of Europe, Africa, and North America will experience only a partial eclipse.

To take advantage of the event, the research team traveled from its home base in Padua, northern Italy, to Spain, where years of development work will culminate in the first field test of CISS. The scientists believe the new instrument could significantly improve observations of the Sun’s corona.

Opportunities Arise During the European Eclipse

Spectrometers are among astronomers’ most valuable tools, allowing researchers to analyze the composition of stars and even detect the atmospheres of distant exoplanets by examining subtle changes in starlight.

Closer to home, the Italian team believes CISS can separate the wavelengths of sunlight far more rapidly than existing instruments. That capability could prove especially valuable because the corona drives powerful space weather events capable of disrupting communications, power grids, and GPS systems on Earth and in orbit.

The researchers see the eclipse as the ideal opportunity to test their instrument, since the Moon’s passage in front of the Sun dramatically increases the contrast of the corona against the sky. For the team, the observation marks the culmination of more than two and a half years spent rethinking some of the fundamental design principles behind conventional spectrometers.

CISS: A Spectrometer Unlike Any Other

Unlike traditional spectrometers, which typically rely on a narrow rectangular slit, CISS uses a circular slit. This allows it to “capture the spectrum of the entire corona at a certain distance from the centre of the Sun in a single photograph,” according to principal investigator Federico Landini of the Astrophysical Observatory of Turin.

By redesigning the instrument’s aperture, the researchers say they have reduced the time needed to scan the corona from hours to just minutes. If successful, the eclipse demonstration could pave the way for incorporating the technology into future space missions designed to observe the Sun from closer vantage points.

For now, the team is focused on ensuring the best possible observing conditions. Researchers continue to monitor the weather, with current forecasts appearing favorable for eclipse viewing. To minimize the risk of equipment problems, the team transported CISS from Italy to Spain by van rather than by air, avoiding the need to disassemble the instrument and reducing the possibility of flight delays or cancellations.

Later this week, they will learn whether years of work have produced a breakthrough in solar observation—or simply the next step in refining a promising new technology.

Ryan Whalen covers science and technology for The Debrief. He holds an MA in History and a Master of Library and Information Science with a certificate in Data Science. He can be contacted at ryan@thedebrief.org.

Stunning new imagery of the distant celestial object NGC 2392, better known as the “Lion Nebula,” has been obtained by NASA’s James Webb Space Telescope.

The cosmic vista captured by Webb reveals a colorful view of the ancient nebula, whose characteristic appearance resembles one of nature’s most respected apex predators, complete with a bushy-looking “mane” composed of hazy stellar gases and objects similar to comets.

The new high-resolution imagery offers one of the clearest and most detailed views of the Lion Nebula ever seen. Previous images captured by Webb’s predecessor, the Hubble Space Telescope, were obtained in 2000, featuring the same celestial feature in visible light.

With the added spectral ranges Webb’s Near Infrared Camera (NIRCam) and Mid-Infrared Instrument (MIRI) can capture, the Lion Nebula now appears in colorful pinks and indigo hues, surrounded by distant galaxies blazing in brilliant orange from across vast cosmic distances, whose light has traveled billions of years to reach our Solar System.

A Lion Roars Across the Cosmos

A particularly striking feature about the new imagery is the way cosmic dust and regions of ionized gas are showcased in the new Webb imagery.

“It’s taken several thousand years for this collection of gas and dust to reach its current shape, and the nebula’s components continue to be altered,” read a portion of a statement released by the European Space Agency (ESA) that accompanied the new images.

One reason that helps account for the changing appearance of the Lion Nebula over time can be found at its center, where the remnants of a slowly dying white dwarf star (which effectively forms the nose in the lion’s face after which the nebula is named) continues to supercharge the surrounding cosmic structures made visible in the new Webb imagery.

The rest of the lion’s face is composed of an expanding bubble of ionized gas, the nature of which remains somewhat mysterious. Presently, astronomers are uncertain about what exact mechanisms give rise to the complex appearance of this gassy bubble and its internal structures, which are a recurring element in ancient nebulae such as this.

NGC 2392 isn’t the only celestial feature known as the “Lion Nebula.” An entirely separate diffuse nebula located in the Cepheus constellation, known as Sharpless 2-132, also shares this nickname due to its shape, which resembles a lion’s body seen from the side.

A Cosmic Visage Frozen in Time  

For now, the Lion Nebula is captured in the Webb imagery, which, despite its almost serene beauty, represents a highly active area of the cosmos, undergoing constant change as material is continually ripped away from the stellar central core.

Sometime in the next 10,000 years or so, this striking celestial feature will eventually be destroyed, once the white dwarf powering the nebula completely dies and the remnants of stellar material are completely dispersed into the surrounding space.

Until then, this remarkable cosmic feature will remain a target of study by astronomers, whose inquiries are helped significantly by the unprecedented clarity offered in the latest Webb images.

Additional information about the Lion Nebula (NGC 2392) can be found on NASA’s official page documenting the Webb MIRI imagery.

Micah Hanks is the Editor-in-Chief and Co-Founder of The Debrief. A longtime reporter on science, defense, and technology with a focus on space and astronomy, he can be reached at micah@thedebrief.org. Follow him on X @MicahHanks, and at micahhanks.com.

An unusual dead star displaying one of the strongest magnetic fields astronomers have ever seen may offer the clearest evidence yet that regions of space appearing to be void of matter are anything but empty.

An international team of astronomers has revealed that the magnetar 1E 1547-5408 displays behavior consistent with vacuum birefringence, a phenomenon first predicted almost a century ago, but never directly observed—until now.

The findings, detailed in a new study published in the journal Nature, were the product of more than 140 hours of observations in 2025 using NASA’s Imaging X-ray Polarimetry Explorer (IXPE), the Neutron Star Interior Composition Explorer (NICER), and Australia’s Murriyang radio telescope.

Spying on the Universe’s Most Extreme Objects

Ranking among the most extreme objects known to astronomers, magnetars are a variety of neutron stars that display unusually strong magnetic fields.

These extreme celestial objects pack more mass than our Sun into a region of space spanning only a few miles; yet they also manage to generate magnetic fields that are sometimes as much as trillions of times that of our planet.

For the recent study, scientists focused on 1E 1547-5408, a magnetar that spins once every two seconds. This magnetar is atypical since it also emits both intense X-rays and bright radio waves. Measuring the polarization of light it produces, researchers were able to discern that X-ray polarization was almost three times stronger than expected, based on current models that characterize the star’s surface, as well as the geometry of its magnetic field.

An Unusual Signal Emerges

The observed characteristics were unexpected, and to explain this, the researchers looked to the concept of vacuum birefringence, a phenomenon originally predicted in 1936. This predicts that magnetic fields possessing enough power could potentially alter the vacuum of space.

According to quantum theory, the vacuum of space isn’t truly empty—it is filled with fleeting “virtual” particles, and when subjected to the influence of such a strong magnetic field, the quantum vacuum is predicted to behave like an extremely large optical filter, whereby light that passes through it is subtly changed, with its polarization increasing.

Based on computer simulations, the researchers found that the proposed vacuum birefringence phenomenon produced results that appeared to be consistent with both the X-ray and radio observations.

Hoa Dinh Thi, a researcher at Rice University and the recent study’s co-lead author, said the team’s model “suggests that reproducing the observed X-ray polarization signatures, while also satisfying the constraints set by radio observations, requires the presence of vacuum birefringence in the neutron star’s environment.”

“This finding exemplifies how neutron stars enable us to test fundamental physics in environments not replicable in labs on Earth,” Thi added.

Although the team says further observations will be required to confirm their findings, their current results offer the strongest evidence to date for one of the longest-standing predictions in quantum physics.

If confirmed through future observations of magnetars, such findings could reveal the presence of other exotic phenomena that may provide astronomers with a unique opportunity to explore the fundamental nature of space itself—and potentially even more surprises in regions of the cosmos that were long assumed to be “empty.”

The recent study, “Vacuum birefringence and the polarized X-ray emission from a radio magnetar,” appeared in the journal Nature. 

Micah Hanks is the Editor-in-Chief and Co-Founder of The Debrief. A longtime reporter on science, defense, and technology with a focus on space and astronomy, he can be reached at micah@thedebrief.org. Follow him on X @MicahHanks, and at micahhanks.com.

More than 140 million miles away from Earth, a rare event recently occurred in the twilight skies above Mars, and it was all captured on camera by NASA’s Perseverance rover.

Imagery of a celestial alignment, featuring Earth as it briefly vanished behind the Martian moon Phobos, was revealed in composite photos captured by Perseverance’s Mastcam-Z instrument in early July as the intrepid rover embarked on its 1,907th Martian day, or sol, on the Red Planet.

The rover’s Mastcam-Z camera system, developed by Arizona State University in collaboration with Malin Space Science Systems, was built for capturing high-resolution panoramic zoom imagery of the Martian landscape. Although its main objectives involve its investigations of Jezero Crater and ancient geological features preserved there for eons, which may even include evidence of past microbial life, cases like the recent celestial alignment showcase how the rover’s cameras can also provide unique insights into astronomical events.

A Robot on Mars Captures an Occultation

Captured against fading twilight, our Earthly home appears as little more than a tiny, bright speck of light as it slowly passes behind the irregularly shaped Martian moon, in what astronomers refer to as an occultation.

NASA applied processing to the rare images, which helped to filter out some of the background light, revealing the brief celestial pairing in greater detail. The resulting imagery offers a glimpse of a dark backdrop that now better highlights the motion of Earth and Phobos in their treks through the Martian sky.

A Sunset Unlike Any Other

The image was obtained roughly 40 minutes after the Martian sunset, as the natural orbital path Phobos follows causes it to appear to drift upward in the new sequence of images, while Earth moves diagonally downward, then slips out of view behind the oddly shaped Martian companion.

In an annotated version released by NASA, timestamps spanning just 40 seconds illustrate the progression of the event in single frames, offering a look at a sunset unlike any ever seen on Earth.

That isn’t to say that the same effect can’t be seen from our planet, but in reverse: a lunar occultation where Mars passes behind the Moon can also be observed here, under the right conditions.

Occultations are frequently used by astronomers to help study the positions and motions of various celestial bodies in this way. However, seeing one from the surface of another planet is a rare treat, offering a view of Earth as a distant point of light.

In the past, Perseverance has also captured images of a lunar eclipse from its position on the Martian surface, as Phobos was seen passing in front of the Sun. Past imagery collected by NASA’s robotic explorer has also documented appearances of the Martian moon Deimos in the Red Planet’s early morning skies.

Colors of Change on a Red Planet

Although Mars’ characteristic rusty hues are ever-present, the recent imagery also offers a glimpse of other subtle colors seen in the Martian environment, particularly at twilight. With subtle bluish grays that gradually transition to redder tones, the new images offer a more nuanced and colorful look at the Red Planet.

Perseverance has now spent more than five years exploring Mars, and its ongoing discoveries have added a wealth of new information to the growing body of knowledge scientists have collected about our nearby planetary neighbor.

As for the recent imagery the rover captured, such a unique view requires careful timing, along with a bit of good fortune, according to Mark Lemmon, a Mastcam-Z co-investigator at the Space Science Institute in Boulder, Colorado.

“Phobos crosses the Martian sky three times a day, and Earth is visible for months at a stretch,” Lemmon said in a statement, adding that “catching one directly behind the other takes planning and a little luck.”

Additional details provided by NASA about the new imagery can be found here and here.

Micah Hanks is the Editor-in-Chief and Co-Founder of The Debrief. A longtime reporter on science, defense, and technology with a focus on space and astronomy, he can be reached at micah@thedebrief.org. Follow him on X @MicahHanks, and at micahhanks.com.

Deep within ancient chamber tombs where elite members of society in ancient Greece and Crete were once laid to rest, new evidence has emerged that these high-status individuals wore some out-of-this-world iron jewelry.

Among the most coveted jewelry worn in the Bronze Age Mediterranean world were rings that were likely made from extraterrestrial iron, according to a new study published in the Journal of Archaeological Science.

Researchers Matthieu Gounelle and Eleni Mantzourani used chemical analysis to examine more than 90 iron objects from the Bronze Age and Early Iron Age, uncovered from 33 archaeological sites, revealing that about one-third of the artifacts were likely crafted using iron that fell from space.

Although iron harvested from ancient meteorites accounted for at least 10 of the rings the researchers examined, another three “might deserve further examination,” the study’s authors say, in new observations that indicate these ancient extraterrestrial adornments “may have been popular power symbols among prominent individuals” that included the Mycenaean and Minoan palatial elite.

Yet despite their apparent significance, the otherworldly fashion trend involving these otherworldly rings seems to have mysteriously vanished by the 12th century BCE, for reasons that remain unclear to researchers.

Meteoritic Iron as a Status Symbol

Using portable X-ray fluorescence, or XRF, to assess these rare artifacts in various museums where they are kept, most of the objects were found to contain very little nickel, if any at all. This is consistent with iron produced using smelting processes from the periods in question, which relied on terrestrial ores.

However, 13 of the objects possessed elevated levels of nickel, which hinted at the likelihood that some of these ancient rings had been crafted with metal originating in meteorites, which contain far more nickel than smelted varieties of iron do.

Another intriguing discovery the researchers made was that each artifact suspected of being made from meteoritic iron was either a whole or fragmentary signet or bezel ring, combining the suspected meteoritic iron with gold, silver, or bronze. Most were also found in various chamber tombs alongside other luxury goods, adding to the likelihood that these unique artifacts may have been considered symbols of status or authority.

Where Did Ancient Greeks Obtain Extraterrestrial Iron?

However, another mystery involves the source of the meteoritic material, which remains uncertain since extraterrestrial iron was uncommon in ancient Greece. Because of this, the team suspects that one reason for this material’s role as a status symbol may have been not just its otherworldly nature, but also the fact that it was likely imported.

“Given the rarity of meteorites in Greece and the established trade networks during the Bronze Age, we propose that the source of the raw meteoritic material was Egypt,” the team writes, “where meteorites are numerous due to the abundance of deserts.”

Several famous examples of meteoritic iron have been recovered from Egypt, which include a dagger found among the items entombed with the Pharaoh Tutankhamun.

The abundance of rings made from this extraterrestrial metal contrasts with the more common iron objects that appear to have been made from smelted material. This suggests that ancient metalworkers recognized the distinction between the materials, and ascribed higher value to the far rarer meteoritic forms of iron.

An Otherworldly Fashion Trend Goes Missing

Curiously, the researchers also found that by around the 12th century BCE, this otherworldly fashion trend appears to have almost completely vanished, and for reasons that remain unclear.

Possible reasons for this may include interruptions to trade networks, political upheaval, or simply changes in trends from the period. However, one potential clue is that the ancient Greeks’ production of meteoritic iron rings seems to have ended coinciding with the collapse of the Mycenaean palace system.

“Such a development could be related to economic, social or political changes,” the team speculates, although they also acknowledge more mundane possibilities.

“It is also possible that the meteoritic finger ring fashion, almost exclusive to Minoan and Mycenaean Late Bronze Age, has ‘naturally’ faded away as does any fashion,” the researchers write.

The recent study, “Iron in Greece in the second millennium B.C.E.,” appeared in the Journal of Archaeological Science. 

Micah Hanks is the Editor-in-Chief and Co-Founder of The Debrief. A longtime reporter on science, defense, and technology with a focus on space and astronomy, he can be reached at micah@thedebrief.org. Follow him on X @MicahHanks, and at micahhanks.com.

When archaeologists began excavating a large ancient settlement near Tel Aviv in 2012, among the many discoveries at the 9000-year-old site were as many as 400 locally crafted artifacts made from obsidian.

One reason this was so significant is that this dark volcanic glass is absent in Northern Israel, and discoveries in the region ultimately helped trace it back to quarry sites in central Turkey. Although the importation of non-local source materials in the ancient world is not particularly unusual, another discovery archaeologists soon made proved more baffling: the appearance of unusual engravings on several arrowheads produced from this ancient Anatolian obsidian.

Now, a rare collection of these uniquely engraved projectiles is providing archaeologists with deeper insights into the presence of a mysterious symbolic tradition that was practiced long ago by some of the earliest farming communities 9,000 years ago.

The Mystery of Anatolia’s Engraved Arrowheads

In a recent study published in Plos One, an international research team examined a collection of eleven previously undocumented arrowheads unearthed at Tepecik-Çiftlik, a Neolithic settlement in Cappadocia. These ancient projectiles are each decorated with carefully carved incisions, the purpose of which remains baffling to archaeologists.

The rare discoveries have been grouped with an exceptionally uncommon class of ancient stone artifacts, which have only been found in Central Anatolia, and were only known to have been produced during the late eighth and seventh millennia BCE. With the inclusion of the new set, which became the focus of the team’s study, the total number of these unusual artifacts rises to 43 that have been documented across the region.

These projectile points are unique among arrowheads, which are one of the most common artifacts from the ancient world, since the purpose of their engravings remains unclear. A range of theories have been proposed, which include the idea that some may have been personal identifiers; other theories propose clan symbols, hunters’ marks, or even ritual or symbolic reasons for their presence on the ancient obsidian weapons.

Unraveling the Mystery

Study authors Alice Vinet and Denis Guilbeau took a cautionary approach, warning that current evidence remains insufficient to draw any firm conclusions about the unusual markings.

“The analysis of these incised arrowheads, along with the limited archaeological and ethnographic comparisons available, calls for a cautious interpretation,” the authors write.

To try to understand the possible meaning behind these markings, the researchers conducted a detailed analysis that examined technological, functional, and iconographic aspects of the markings. Based on macroscopic evaluations, the source of the obsidian was determined to likely come from volcanic sources at Göllüdağ and Nenezi Dağ in Turkey, both of which are recognized by archaeologists as sources of high-quality volcanic glass during the Neolithic.

Despite their simplicity, the engraved designs on the samples the team examined showed significant diversity. However, no consistent relationship emerged between the incisions and the raw materials used to craft the arrowheads; nor were any connections apparent regarding manufacturing techniques, shapes, or in terms of use patterns.

One potentially important observation was that some of the engravings appear to have been made before the tools were completed, while other examples showed signs of engraving after completion. This suggests there had been no standardized stage during production when the markings were applied that may provide clues in terms of a possible meaning behind the markings (such as a kind of label or other marking that might have been used to designate individual samples before being knapped into projectiles).

Despite the variations between samples, their overall comparison with other samples recovered from Central Anatolian sites in the region did appear to show recurring design components, suggesting continuity that could indicate a shared visual tradition that was incorporated across multiple ancient communities in the area.

Location Offers Clues

Another intriguing aspect of the team’s study involves the locations where they were recovered. As opposed to simply being found in ceremonial contexts, some of the projectiles were found in the remnants of homes, while others were found in lithic production sites or during archaeological surveys, which seems to suggest the engraved obsidian arrowheads saw use in a wide range of everyday activities and practices.

Still, based on their rarity and constrained geographic distribution, the persistence throughout several centuries of Anatolian prehistory seems to point to a unique cultural practice in the region, the full significance of which remains unknown. For now, their presence offers a unique look at the ancient hunters and farmers from one of the earliest settled societies, suggesting that even artifacts with largely practical uses may have held greater significance in terms of the symbolic importance they held for their ancient makers.

 The recent study, “Intentional incisions on Neolithic Obsidian arrowheads from Central Anatolia: A techno-functional and iconographic approach,” appeared in Plos One on July 28, 2026.

Micah Hanks is the Editor-in-Chief and Co-Founder of The Debrief. A longtime reporter on science, defense, and technology with a focus on space and astronomy, he can be reached at micah@thedebrief.org. Follow him on X @MicahHanks, and at micahhanks.com.

Lasers are no longer required to produce quantum entanglement, physicists say, after achieving the state using sunlight. In a laboratory experiment, an international team of researchers demonstrated that natural sunlight can produce quantum-entangled photon pairs.

The researchers recently published their quantum entanglement study in Optica, showing that lasers aren’t the only game in town. The work could herald a new energy-efficient approach to sustainable quantum technologies, both on Earth and in space.

Quantum Entanglement

Quantum technologies such as computing, communications, and sensing rely on the strange principles of quantum mechanics, which often defy explanations rooted in classical physics. Typically, quantum technologies use lasers to convert photons inside a nonlinear crystal into entangled pairs through a process called spontaneous parametric down-conversion (SPDC).

Prior to this work, using sunlight to produce quantum entanglement in photons was largely considered impractical. Researchers had assumed that SPDC depended heavily on phase-stable electromagnetic fields, requiring the high coherence of laser beams. Scientists also believed that the intense power of lasers was crucial to the nonlinear processes that produce entanglement. By contrast, sunlight’s relative weakness and incoherence left it largely overlooked as a viable source for generating entangled photons.

Reconsidering Coherence

Earlier work may have dismissed sunlight too readily because scientists had not fully considered the different dimensions of coherence. Across different parameters, sunlight can exhibit varying degrees of coherence. This means that while a beam of sunlight may be coherent in a particular property, such as polarization, it can still generate quantum entanglement along that parameter.

“As long as the pump beam is perfectly polarized, its spatial or temporal incoherence should not preclude the generation of polarization entanglement,” said lead author Cheng Li in a statement.

“The trick to harnessing sunlight is to keep different degrees of freedom of light from influencing each other during the process,” Li added. “This means that sunlight is perfectly capable of generating entangled photons, as long as one can concentrate enough sunlight into a nonlinear crystal to induce SPDC.”

Directing Sunlight

In a natural environment, sunlight spreads across a broad area rather than remaining tightly focused like a laser beam. Efficiently directing it through a nonlinear optical crystal, only a few millimeters wide, therefore presents a significant challenge.

To overcome this obstacle, the researchers constructed a sunlight concentration system that collects light across a 1.4-square-meter surface and focuses it down to approximately the width of a human hair. The specialized solar concentrator is conical rather than flat and is constructed from glass. As sunlight reflects repeatedly across the interior surface on its way toward the cone’s tip, it becomes progressively concentrated and intensified before traveling through a single optical fiber to drive the SPDC process that generates quantum entanglement.

Quantum Entanglement Results

In laboratory tests, the researchers found that their sunlight-driven SPDC system produced performance comparable to that of a laser, achieving 94% fidelity. The efficiency of the entanglement process was also similar to that achieved with laser-based systems. Together, these findings challenge previous assumptions that SPDC requires highly coherent laser light to operate effectively.

The approach also eliminates the need to first convert electrical energy into optical energy, potentially reducing system complexity, heat generation, and points of failure.

“Sunlight is an abundant and reliable resource in many environments, especially in space. Being able to generate quantum-entangled photons directly from sunlight could enable simpler and more resilient quantum systems for satellites and future deep-space missions,” said Hanieh Fattahi, the study’s co-author, in a statement.

“We believe this work can inspire much new research in nonlinear and quantum optics,” Fattahi said, adding that this research “may in turn make sunlight-driven quantum technology more practical.”

The paper, “Generating Quantum Entanglement from Sunlight,” appeared in Science Advances on August 5, 2026.

Ryan Whalen covers science and technology for The Debrief. He holds an MA in History and a Master of Library and Information Science with a certificate in Data Science. He can be contacted at ryan@thedebrief.org.

A Southwest Research Institute (SwRI)-led research team has discovered evidence of liquid nitrogen rising to the surface of Pluto through cracks in the dwarf planet’s heart-shaped glacier, Sputnik Planitia.

According to the researchers behind the detection, the liquid nitrogen evidence captured by NASA’s New Horizons Spacecraft is the first evidence of any liquid flowing on Pluto. They also suggest that the discovery could help scientists better understand other solar system features such as the geysers on Neptune’s moon Triton.

New Horizons Mission Gave First Hint of Liquid Nitrogen on Pluto

When New Horizons captured images of Pluto’s surface between 2015 and 2016, it gathered extensive imagery of a massive surface feature called Sputnik Planitia. Larger than Texas and Oklahoma combined, the frozen nitrogen lake has long fascinated planetary scientists.

When examining the spacecraft’s photos, researchers spotted thin, dark, linear features separating the city-sized geologic convection cells on Sputnik Planitia’s northernmost portions. Critically, the thinner, separating features were more diffuse than the larger ones. Although some previous studies suggested that Pluto may have a liquid water ocean beneath its frozen outer shell, the surface temperatures would prevent any of that water from flowing on the surface long enough to cause the features.

Some theories proposed a liquid nitrogen explanation for the thinner features, even though the research team behind the discovery said that Pluto’s atmospheric and thermal conditions make liquid rain physically impossible. Still, the team notes, the surface patterns on Pluto’s northern Sputnik Planitia “have been darkened in ways that resemble glacial features on Earth that have been wetted by water rain or the subsurface emergence of liquids to the surface.”

To better understand the data, SwRI Associate Vice President and principal investigator on the New Horizons mission, Dr. Alan Stern, reexamined the data, focusing on similar features on Earth.

Sputnik Planitia Evidence “Very Similar” to Greenland Ice Sheet Features

To start, Dr. Stern and colleagues compared the New Horizons images with Earth imagery collected by NASA’s Landsat 9. The researchers focused on the Greenland Ice Sheet, since similar surface features caused by liquid water separating ice and snow have been previously observed.

When focusing on topography, the team said the two regions appeared “very similar.” This similarity suggested that subsurface liquids in the form of nitrogen were rising to the surface and wetting areas of Sputnik Planitia’s nitrogen ice.

SwRI Principal Scientist Dr. Kelsi Singer, one of the study’s co-authors, said Sputnik Planitia’s surface is “quite young” in geological terms, with most estimates placing it at less than one million years. As a result, the dark, thin surface features must have formed during that short window of time.

“Pluto has many unique terrains seen nowhere else in the solar system, and this area of Sputnik Planitia is one of them,” Dr Singer explained. “Its surface provides a different set of conditions compared to what we are used to on Earth, and exploring that allows us to better understand how materials behave in environments that are difficult to produce on Earth.”

To support the visual evidence of liquid nitrogen on Pluto, Dr. Orkan Umurhan, a senior research scientist at the SETI Institute, oversaw the creation of computer models designed to simulate the dwarf planet’s local environment. According to the study authors, the models “show that nitrogen ice at the base of Pluto’s kilometers-deep Sputnik glacier can melt, forming liquid nitrogen.”

The same models also revealed that buoyancy and pressure from underneath can cause liquid nitrogen to migrate to Pluto’s surface via a series of small conduits that resemble lava or geyser tubes. Although the dwarf planet’s distance from the Sun makes it an extremely frigid environment, the models also suggested that once liquid nitrogen reaches Pluto’s surface, it can maintain liquid form long enough to flow down the nitrogen glacier slopes and cause the features seen in the images.

“Pluto Never Stops Surprising Us”

When discussing the significance of the findings, Dr. Umurhan pointed to the study’s  “tantalizing picture that it promotes,” including potentially motivating a further examination of solid-state nitrogen physics at very low temperatures.

“Specifically, it’s important to examine the physics taking place in solid nitrogen materials under stress and strain, which can cause them to melt,” the study author explained, adding that these processes “have never been studied in real detail in the laboratory.”

The SwRI-led team also noted that over half of Pluto remains unmapped in high resolution, meaning there is still a lot of room for future discoveries. This includes further mapping of the other Kuiper Belt planets “to determine if similar processes are occurring elsewhere in that region of the solar system.”

Finally, the SwRI-led team said the findings could offer some assistance in explaining other events across the solar system, such as the geysers observed by NASA’s Voyager 2 on Neptune’s moon Triton.

“Pluto never stops surprising us, and this new result certainly does that,” Stern concluded. “In addition to suggesting that liquids have recently expressed themselves on Pluto’s surface, it also suggests a new kind of time-variable feature on Pluto.”

The study “Evidence for possible N2 basal flow beneath Pluto’s northern Sputnik Planitia” was published in The Planetary Science Journal.

Christopher Plain is a Science Fiction and Fantasy novelist and has spent the last six years as Associate News Editor and Head Science Writer at The Debrief. Follow and connect with him on X, learn about his books at plainfiction.com, or email him at christopher@thedebrief.org

An international research team has uncovered how LUCA, the last common ancestor of all life on Earth, split into the first two branches of organisms—bacteria and archaea—allowinglife to thrive innew conditions and spread to other biomes.

Scientists from the Institute of Molecular Evolution at Heinrich Heine University Düsseldorf (HHU) led the research, revealing their findings in a recent paper published in Science Advances, investigating these early cells’ metabolisms.

The team discovered that the chemical reactions and energy sources behind these two types of cells told unique stories of separate evolutions, in new work that sheds light on the primordial processes that gave rise to some of Earth’s first free-living cells.

Life on Earth Begins

Roughly four billion years ago, life on Earth emerged as the first cells formed, most likely at hydrothermal vents, before evolving to explore new biomes. 

“We would see two very different kinds of cells emerging, pioneer bacteria and pioneer archaea, making their first attempts at life outside the confines of a hydrothermal vent,” said lead author Natalia Mrnjavac, a biologist at the University of Düsseldorf.

The new study investigated protein structures, chemical reactions, and genomes involved in the evolution of these early free-living cells.

“These comparisons are giving us unprecedented insights into the phase of evolution when metabolism catalysed by enzymes was arising from spontaneous reactions catalysed by metals in the Earth’s crust,” said senior author William Martin, a Düsseldorf biologist.

Metabolism and Evolution

Among the new work’s major findings is a consideration of the entire set of 420 chemical reactions involved in metabolism that produce amino acids, RNA bases, and vitamins from the raw materials of hydrogen, ammonia, and carbon dioxide. 

These reactions are preserved for modern researchers inside the genetic code, allowing the team to make a surprising discovery: about half of LUCA’s reactions were catalyzed by environmental metals instead of enzymes produced by the organism itself.

“Metals that naturally occur in hydrothermal vents can replace a surprisingly large number of enzymes in metabolism,” said co-author Harun Tüysüz, an inorganic chemist from the Max-Planck-Institut für Kohlenforschung and the IMDEA Materials Institute in Madrid.

In this study, the team reconstructed catalysis evolution from metal-only to a metal-enzyme hybrid present in LUCA, and finally to the divergence of the bacterial and archaeal lineages. This evolution helped life move on from the hydrothermal vents inhabited by the first cells by replacing the inorganic catalysts provided by that environment with new enzymes. 

“We can see cases where the ancestors of bacteria and archaea independently evolved structurally distinct enzymes to catalyse the same essential metabolic reaction,” Mrnjavac explained, adding that “such parallel inventions could have paved the way to the independent emergence of free-living bacteria and archaea.”

The Energy for Life on Earth

A primary question involves what supplied the energy driving metabolic reactions in early life on Earth. A compound named ATP is the primary metabolic driver in most organisms today, but it comes from enzymes and is not present in hydrothermal vents. The researchers identified a new energy source in palladium, a natural catalyst used by chemists and also plentiful in hydrothermal vents.

“When we react phosphite, a form of phosphorus that naturally occurs in hydrothermal vents, with organic compounds, we get metabolic phosphorylation reactions overnight in water. Phosphite and palladium replace ATP and enzymes; it’s amazing, and it makes early evolution a lot easier to grasp,” Schlikker said.

Understanding the interconnection between so many reactions presents a significant mathematical challenge. For this reason, the team included not just biologists, but network scientists tasked with ordering the reactions by their complexity, which the researchers hoped would indicate the sequence in which they evolved. Using a machine learning algorithm, the team discovered that a clear order did appear to exist.

“The new data leave only one conclusion,” Martin concluded. “The bacteria and archaeal lineages made the transition to the free-living state independently. Only free-living cells are alive.”

“Let’s call it by name,” Martin added. “We are looking at one origin of the genetic code, but two origins of life.”

The paper, “Intermediate Stages in the Origin of Metabolism at a Phosphorylating Hydrothermal Vent,” appeared in Science Advances on August 5, 2026.

Ryan Whalen covers science and technology for The Debrief. He holds an MA in History and a Master of Library and Information Science with a certificate in Data Science. He can be contacted at ryan@thedebrief.org.

Researchers at Charité – Universitätsmedizin Berlin have demonstrated the potential for using THC, the psychoactive component in cannabis, to treat or even eliminate debilitating nightmares associated with post-traumatic stress disorder (PTSD).

The researchers behind the findings said that THC did not reduce other PTSD symptoms, such as the condition’s severity or depression. However, they plan to further explore its ability to treat nightmares, including the potential safety and efficacy associated with long-term use.

PTSD Nightmares Cause Sleep Deprivation and Fear of Going to Sleep

According to a statement from the Charité team, people who survive or witness extreme experiences such as abuse, war, disasters, or other acts of violence can become overwhelmed and unable to consciously process their experience. As a result, many experience what researchers term an “echo,” where the subconscious tries to process the trauma. The more common term for the experience is post-traumatic stress disorder, or PTSD.

People suffering from this condition often report nightmares as one of the most persistent and debilitating symptoms. Along with the horror associated with continuously reliving their traumas, sometimes on a nightly basis, sufferers also experience severe sleep deprivation. These problems are then compounded by a fear of going to sleep and experiencing nightmares repeatedly.

Attempts to treat PTSD related nightmares have found mixed results. For example, some doctors have prescribed antidepressants or blood pressure-lowering medications to treat the symptoms. However, the research team notes that pharmacological treatments are only partially effective, and “often fail to adequately relieve” PTSD-related nightmares.

There is one medication specifically approved for treating PTSD-induced nightmares. However, the team notes, it is not yet widely available, including in Germany where the study was performed. 

Exploring Alternative Treatments

To explore alternative treatment solutions, Prof. Stefan Röpke, who conducts research on trauma-related disorders at the Department of Psychiatry and Neurosciences on the Benjamin Franklin Campus of Charité, and colleagues designed experiments around tetrahydrocannabinol, or THC.

Although widely used for recreational purposes, cannabis has shown some promise for treating a wide variety of medical and psychological conditions. Still, until recently, the drug’s legal status has limited its medical applications, offering researchers a potentially untapped source of PTSD nightmare relief.

For this study, Professor Röpke and colleagues were interested in THC’s established interactions with the human body’s endocannabinoid system. That’s because this system plays a role in sleep regulation, stress, and the processing of emotional memories.

For example, the professor explained, some evidence suggests that THC reduces activity during REM sleep. Known as the dream state, REM sleep is an intense dream phase during which “the brain processes experiences and regulates emotions.

“THC reduces dream activity and thereby alleviates nocturnal stress responses,” the professor explained.

More Than a Third Report Complete Elimination of Nightmares

To start, the team enlisted more than 170 study participants. Critically, all participants suffered from PTSD and intense nightmares, resulting in sleep deprivation and a fear of going to sleep. Instead of smoking cannabis, the researchers administered a form of cannabis-derived THC drops called Dronabinol. As a legal medication, this form of THC is considered clinically safe.

During the ten-week study period, each participant was instructed to take the drops before bedtime. Half of the participants received THC drops, while the others received cannabis-flavored placebo drops. To maintain double-blind study integrity, neither the participants nor the researchers knew who received which treatment.

After the trial period finished, the researchers discovered several positive results. Most notably, the THC group reported a significant decrease in nightmares compared to the placebo group.

According to the study authors, when ranking a participant’s “nightmare burden” on a scale of zero to eight points, participants’ scores dropped by an average of 3.7 points. For comparison, the placebo group experienced an average drop of 2.2 points.

Perhaps even more significant, Professor Röpke said that “more than a third” of the THC patients reported a complete absence of nightmares after the ten-week period concluded. The professor also noted that 21 percent of the study participants reported that their nightmare burden had been at least cut in half. Finally, the professor said that five out of six study participants in the THC group “felt their health had markedly improved.”

Exploring the Safety and Efficacy of Long-Term THC Use

Although the study results offer some possible hope for relief from nightmares and improved sleep, the researchers said the THC treatments did not affect all PTSD symptoms. For example, they observed that a participant’s PTSD severity and any accompanying depression “did not change conclusively.”

No severe side effects were reported by the THC group. However, the researchers did observe some minor complaints, such as headaches, dizziness, or increased appetite. Participants did not report any withdrawal symptoms after the cessation of the treatment period.

Moving forward, the team will explore the safety and effectiveness of long-term nightly THC treatments. They also hope to explore whether patients develop a tolerance to THC’s nightmare-abating effects over time.

The study “Dronabinol for nightmares in post-traumatic stress disorder: a randomized controlled trial” was published in Nature Medicine.

Christopher Plain is a Science Fiction and Fantasy novelist and has spent the last six years as Associate News Editor and Head Science Writer at The Debrief. Follow and connect with him on X, learn about his books at plainfiction.com, or email him at christopher@thedebrief.org

Welcome to this edition of The Intelligence Brief… This week, NASA engineers successfully extended the operational life of the iconic Voyager 2 spacecraft through a carefully orchestrated power-saving procedure, raising new hopes that the legendary probe may continue exploring interstellar space well into the 2030s. In our analysis, we’ll examine 1) how engineers carried out the ambitious “Big Bang” operation to conserve the spacecraft’s dwindling power supply, 2) why Voyager’s aging radioisotope power system presents an ever-growing challenge, 3) how NASA hopes to keep both Voyager probes returning valuable scientific data decades after their original missions ended, and 4) what the remarkable longevity of the twin spacecraft reveals about one of the most successful engineering achievements in the history of space exploration.

Quote of the Week  

“Voyager revolutionized our conception of the solar system. After almost 400 years, it transformed the astronomical objects observed by Galileo into true ‘worlds’.”

– Dr. Michael Bland, USGS Research Space Scientist

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RECENT NEWS from The Debrief

• Antarctica’s eerie blood falls could be hosting a thriving colony of million-year-old microbes.
• A major discovery by archaeologists is extending the accepted timelines on the origins of ancient ceramic technology.
• New research says “nonordinary” experiences may be more universal than previously thought.
• Humanity’s biggest hurdle may be reproduction in space—here’s why.
• Get all the latest stories from The Debrief, with more breaking stories at the end of this week’s newsletter.

An Ancient Spacecraft Undergoes a Long-Distance Operation

This week, engineering teams at NASA’s Jet Propulsion Laboratory succeeded in once again extending the lifespan of one of the space agency’s most iconic spacecraft.

Power systems have reportedly now been freed up on Voyager 2, allowing the famous space probe, which is now making its way through interstellar space, to continue sending valuable scientific data back to Earth with help from NASA’s Deep Space Network.

The largest and most sensitive telecommunications network in the entire solar system, for several decades now, the Deep Space Network has enabled Voyager 2 and its twin, Voyager 1, to relay science data about our planetary neighborhood back to Earth.

Launched on August 20, 1977, from Cape Canaveral, Florida, Voyager 2 is truly ancient by the standards of modern space exploration. The probe blasted off on its cosmic mission 16 days before its twin, Voyager 1, to account for specific orbital path needs.

While both spacecraft completed their official planetary flyby missions decades ago, each has overcome seemingly impossible odds in recent years and has managed to continue dispatching science data from the furthest points in the cosmos any human-built spacecraft has ever reached.

But how much longer will Voyager’s ongoing extended mission really be able to last?

A Big Bang in Interstellar Space

Recently, to free up power on Voyager 2, JPL engineers engaged in an effort dubbed the “Big Bang,” which involved simultaneous shutdowns of some of the devices on board the spacecraft and reallocating lower-power alternatives.

One of the key hurdles with this operation involves making sure Voyager 2 remains warm enough to function properly, since current power systems combined with its tremendous distance from the Sun keep the aging spacecraft’s core and instrument bays at a frosty 38.5°F—temperatures that are already dangerously close to the freezing point.

Dwindling Power Systems

The primary source of power aboard both Voyagers is their radioisotope thermoelectric generators, which generate heat using decaying plutonium, which is thereby converted into electricity. Every year, an average of four watts of power is lost as the plutonium supplies of each spacecraft continue to deplete.

Still, while their power stores are perilously close to zero, both remain online nearly a half-century after their launches in the late 1970s.

Over the last several years, several science instruments on each of the spacecraft have been disabled to help preserve power. According to NASA, the recent “Big Bang” operation helped prevent the shutdown of another instrument on Voyager 2 before the end of the year.

“The savings should provide power to keep its three instruments operating for at least an extra year,” read a NASA statement issued this week. JPL engineers also plan to perform the same operation on Voyager 1, which is currently even farther away than Voyager 2.

Voyager’s Path to the 2030s

The Voyager team hopes these measures will extend the spacecraft’s operational lifetimes into the 2030s, allowing them to continue returning valuable scientific data for years to come, provided they remain in contact with NASA’s Deep Space Network.

The spacecraft have already “far surpassed their original mission of exploring the outer planets,” said Patrick Koehn, Voyager program scientist at NASA Headquarters in Washington, in a statement last year.

“Every bit of additional data we have gathered since then is not only valuable bonus science for heliophysics but also a testament to the exemplary engineering that has gone into the Voyagers — starting nearly 50 years ago and continuing to this day,” Koehn added.

Launched more than 46 years ago, the twin Voyager I and II probes represent the longest-running missions in NASA history, as well as the farthest spacecraft ever to have travelled from Earth.

During their missions, both Voyager spacecraft visited Jupiter and Saturn, and Voyager II also flew by Uranus and Neptune. Now, with the successful implementation of the “Big Bang” procedure on Voyager 2, which is soon to be undertaken with its farther distant twin spacecraft in the months ahead, the two iconic spacecraft will at very least be secured for continuous operations through the end of the year, and with a bit of luck, on into the 2030s.

That concludes this week’s installment of The Intelligence Brief. You can read past editions of our newsletter at our website, or if you found this installment online, don’t forget to subscribe and get future email editions from us here. Also, if you have a tip or other information you’d like to send along directly to me, you can email me at micah [@] thedebrief [dot] org, or reach me on X: @MicahHanks.

Here are the top stories we’re covering right now…

Scientists from the Beijing Institute of Technology have revealed a colloidal quantum dot (CQD)-based infrared-to-visible upconverter that transforms the infrared spectrum into full color, allowing people to ‘see’ the infrared in the visible light spectrum.

The research team behind the novel invention said their upconverter can be used in eyeglasses to improve human vision and for augmented reality (AR) applications. They also reported a successful implantation of an upconverter in mice, opening the possibility of an implantable photoreceptor to repair or improve vision in human eyes.

Attempts to Convert Infrared to Full Color Face Limitations

In a published study detailing the novel, full-color IR glasses, the human eye is “inherently blind” to infrared radiation. Although IR radiation interacts with the retina, infrared wavelengths lack the energy to trigger the photoisomerization of the retinal chromophore that lets people distinguish colors. As a result, humans don’t have visual access to over half of the solar spectrum.

Still, the researchers write, “harnessing this imperceptible radiation is critical, as infrared perception unlocks a vast reservoir of inaccessible information.” For example, this added visual information enables critical functions in other animals, such as navigation in darkness or detecting predators and prey from their heat. Still, they observe that our natural visual-light spectrum vision is “utterly inadequate” to access this information that so many animals rely upon.

In their study, the researchers highlight recent advances in accessing the IR spectrum, including “ocular injectable photoreceptor-binding upconversion nanoparticles” that convert infrared light into visible emissions. Other studies have also evaluated wearable lenses with nonlinear upconversion projecting infrared-transformed visible light onto the cornea and photovoltaic nanowire networks.

Although these approaches achieved some IR sensitivity, the study authors said they remain “fundamentally constrained” to narrow near-infrared (NIR) spectral response. These prior efforts also relied on high-intensity laser excitation that the team notes is “incompatible with natural infrared radiation.” The result is a “mostly monochromatic output” lacking infrared spectral discrimination in full color.

Subtle IR Wavelength Variations Facilitate Upconversion

For their new approach, the research team investigated a mercury telluride (HgTe) CQD-based infrared-to-visible upconverter. They note that this material combination leverages the material’s “quantized energy level states” in synergy with a separate, dual-emissive-layer organic light-emitting diode (OLED).

Specifically, the engineered layers captured IR photons in strategically engineered hole-trapping barriers. The team explains that this “allows for subtle differentiation of infrared input by tuning the emitted visible color and luminance” based on infrared wavelength and intensity.

“This upconversion yields a discrimination sensitivity to subtle infrared variations exceeding two orders of magnitude higher than conventional single-color modes, capitalizing on the human eye’s intrinsic superiority in chromatic differentiation over simple luminance contrast,” they explain.

To test their material’s IR upconversion ability, the researchers designed a pair of lightweight (23 grams) semi-transparent wearable eyeglasses. The team said these tests were a success, achieving “high-resolution infrared imaging” derived from the infrared spectral information. However, instead of monochrome, the research team said that data is displayed as full-color visible patterns directly onto the retina, “enabling intuitive infrared vision without obstructing natural sight.”

Surpassing the Evolutionary Boundaries of Biological Photoreception

Although the current version of the full-color, infrared-capable glasses is still in the development stages, the team said the technology could lead to advancements in visual prosthetics, augmented reality (AR), and “navigation under environmental conditions where normal sight is degraded.”

Following the successful validation in mice, the team said their technology could also serve as the technological basis for an implantable new-generation retinal photoreceptor. In that design, the team said an implanted device could transform infrared light into visible light emissions “that stimulate light-sensitive proteins on retinal neurons to bypass damaged photoreceptor cells and potentially restore visual function across both the visible and infrared spectra.”

“By surpassing the evolutionary boundaries of biological photoreception, this technology paves the way for next-generation visual prosthetics, high-fidelity augmented reality, molecularly sensitive substance identification, and robust navigation in degraded visual environments,” they conclude.

The study “Multispectral infrared-to-full-color upconversion expanding human vision” was published in Science Advances.

Christopher Plain is a Science Fiction and Fantasy novelist and has spent the last six years as Associate News Editor and Head Science Writer at The Debrief. Follow and connect with him on X, learn about his books at plainfiction.com, or email him at christopher@thedebrief.org

The silvery fur of the hamadryas baboon is, under a spectrometer, nearly the exact color of moonlight, which may explain why ancient Egyptians made a monkey the face of their moon god, according to a new study in Time and Mind.

The work, from biological anthropologist Nathaniel Dominy of Dartmouth College and primatologist Catherine Hobaiter of the University of St Andrews, takes an old Egyptological question and points an instrument at it. Thoth, god of the moon, writing, and magic, had two sacred animals: the ibis and the baboon. The ibis makes sense. A curved beak echoing a crescent, white plumage the same color as the moon’s glow.

The baboon, however, has long “defied explanation,” as one Egyptologist put it; the key problem being that baboons didn’t live in Egypt.

Egypt’s pantheon features many local creatures, from the jackals that haunted its cemeteries to the cow that stood in for the mother goddess Hathor. But no wild baboon has ever been found in Holocene Egypt. The hundreds recovered from tombs and temples were all imports, carried in by ship from somewhere down the Red Sea coast. Of all the animal gods, the baboon is the only foreigner.

“Why would two such different animals be used to represent one deity? Most other Egyptian deities are represented by just one type of animal. Ancient Egyptians were familiar with at least three species of ibis, but they chose the white one for embodying Thoth. They were also familiar with two species of baboon, along with vervet monkeys and patas monkeys, but again they chose the silver-white species,” explained lead author Professor Catherine Hobaiter in a press statement.

According to the study, the Egyptians were picky. They knew two species of baboon and three of ibis, and each time they deified only one of each.

“Sacred ibises and hamadryas baboons are different in many ways, but one thing that unites them is their moon-like colour,” Hobaiter said.

To test whether color was the thread, the team recorded reflectance spectra from the hair of 12 baboon specimens at the American Museum of Natural History and lined them up against the measured spectrum of moonlight. The olive baboon came back green, peaking around 525 to 650 nanometers (which is precisely why it is called the olive baboon). The hamadryas came back silver-gray, roughly 65 percent brighter, with a curve the authors call “indistinguishable from moonlight.”

According to the study and historical records, the living emblem of Thoth is not just the hamadryas but the mature male, with his heavy silver shoulder mantle and white cheek ruffs. This head of hair is so reflective the authors clock it as brighter than a golden lion tamarin, a monkey practically famous for glowing. The Germans noticed too. Their name for the animal is Silberpavian, the silver baboon.

There is a stranger layer beneath the color. Egyptians kept baboons in their temples partly to watch them, because the animals seemed to answer to the moon. There are historical records which indicate that male baboons in Egypt, during a fifth-century solar eclipse, fell into a state of “grief” and, according to the ancient writer, entered a sort of trance of reverence. 

Modern ethologists watching zoo baboons during the 2017 total eclipse logged something uncomfortably close: activity falling away, the animals going quiet and huddling together. The Egyptians, in effect, may have kept a small colony of living eclipse detectors and read their unease as devotion.

History being what it is, and not an exact science, the authors are careful not to pretend that their findings are direct evidence as to why Ancient Egyptians made gods of baboons. A spectrometer can confirm that a baboon is the color of moonlight. It cannot confirm that the color is why anyone bowed to it. The argument rests on a 2024 etymology tracing Thoth’s name to a word meaning roughly “bright-thing.”

There is also an irony the study mostly steps around. The male’s silver mantle did not evolve to look like the moon; it evolved as a sexual signal, a way for dominant males to advertise themselves to other baboons. The Egyptians took a mating ornament and read it as a message from the sky.

That may be the most human thing in the whole account. The Egyptians were meticulous observers who noticed that one animal, in one sex, at one particular brightness, resembled the thing they worshiped, and decided the resemblance meant something.

One of those baboons even has a name. Harnufi was brought to Egypt in the sixth year of Ptolemy V and entombed 31 years later, on September 6, 168 BC. Someone counted out his life in years, mummified him, and laid him down as a small gray piece of the moon.

Throughout recorded history, humans have experienced events that challenge their understanding of reality. These include purported out-of-body and near-death experiences, anomalous events or perceptions, and even profound spiritual awakenings.

Depending on an individual’s culture, belief system, or worldview, these experiences may be interpreted as mythical, psychological, pathological, or even deeply spiritual. However, a new study by Ronald Fischer of the Instituto D’Or de Pesquisa e Ensino in São Paulo, Brazil, and colleagues suggests that these types of experiences may be more universal than previously thought.

Published in PLOS ONE, the research team took a deeper look into how people understand or personally interpret “nonordinary experiences,” what those factors might include, and how they could be seen as distress or personal growth. 

The Study 

The researchers examined how thousands of people interpreted unusual experiences. For example, one person might view an out-of-body or near-death experience as evidence of a spiritual awakening, while another might interpret the same event as a neurological phenomenon or the result of normal brain chemistry.

Similarly, hearing voices may be regarded as a symptom of mental illness in some cultures, while others interpret it as a spiritual or supernatural experience. The study argues that both perspectives can be valid, depending on the individual’s cultural and personal framework.

“Experiences like sensing a presence, having a vision, or feeling as though you are observing yourself from outside your own body are far more common in the general population than clinical diagnosis rates would suggest,” Fischer said in a statement. “We observed that most people in our sample of over 5000 participants who report them are not unwell, and most describe them as neutral or positive — both at the time they occur and also when looking back and reflecting on that experience.” 

The research team first reviewed and validated the Inventory of Nonordinary Experiences. They then developed a questionnaire designed to assess both the universal and cultural influences shaping participants’ interpretations of these events. After refining the survey based on feedback from 160 Brazilian participants, the researchers administered the final 47-question questionnaire to 5,117 individuals representing the general population.

“Previous research has often failed to differentiate the experience and how people make sense of such diverse and challenging experiences,” Fischer explained. “Our work stands out in that we squarely focus on where and when these experiences happened and how people tried to make sense of them.”

“By clearly separating the context, the experience and the meaning-making processes, the patterns we observe challenge various assumptions that have guided previous theory, research but also clinical practice,” he added. 

Among the findings, 20% of participants reported that their nonordinary experience had a negative impact, while 25% said it caused suffering or discomfort. However, 51% reported that their experience ultimately produced positive long-term effects.

The researchers also found that 39% of participants experienced these events while alone, and approximately 57% reported being awake and alert at the time. While some participants attributed their experiences to random chance, most reported having at least some degree of perceived control over the experience.

“For many people, such experiences can be meaningful and lead to personal growth and insight,” Fischer says. “Highlighting these possible positive outcomes is important to help people make sense of them and help to normalize them. Importantly, we hope our work can help to remove stigma by focusing on the diverse ways that people experience and make sense of them.”

“However, we would also stress that if people feel that these experiences interfere with their daily activities, then they should talk to a professional or seek help from somebody that they trust,” Fischer adds.

Overall, the survey challenges the assumption that anomalous experiences should primarily be viewed through the lens of mental illness.

“What struck us was the mismatch. These experiences share features with symptoms used to define psychosis and dissociation yet are frequently observed in a general-population sample,” said Pedro Fortes, a Researcher at the Instituto D’Or de Pesquisa e Ensino (IDOR). “Our prevalence study suggests they most often arrive in entirely ordinary moments, when we’re awake, alert, and by ourselves, and are commonly remembered as meaningful rather than frightening.”

Jorge Moll, neurologist and neuroscientist at the Instituto D’Or de Pesquisa e Ensino (IDOR), adds that “How a person interprets an unusual experience matters more than the experience itself in determining whether it becomes a source of distress or of meaning.”

“That has direct consequences for how clinicians and families respond when someone describes something extraordinary,” Moll concluded. 

Chrissy Newton is a PR professional and the founder of VOCAB Communications. She currently appears on The Discovery Channel and Max and hosts the Rebelliously Curious podcast, which can be found on YouTube and on all audio podcast streaming platforms. Follow her on X: @ChrissyNewton, Instagram: @BeingChrissyNewton, and chrissynewton.com. To contact Chrissy with a story, please email chrissy @ thedebrief.org.

Antarctica’s Blood Falls, a striking and eerie-looking feature in the McMurdo Dry Valleys where crimson-red fluid oozes from the tongue of the Taylor Glacier, may point to a hidden connection between the sea and the coldest desert on Earth.

According to new research, these unusual features on the southernmost continent may contain microbial evidence of water flowing from ancient seas into the Antarctic desert. Researchers from the J. Craig Venter Institute (JCVI) and Scripps Institution of Oceanography at the University of California, San Diego, revealed their Antarctic discovery in a recent paper published in Nature Geoscience, identifying eukaryotic organisms swimming in the crimson water.

The distinctive color of the Blood Falls comes from the high iron content of the salty water, which leaves a crimson stain on the white snow as it flows out from under the glacier.

An Antarctic Discovery

Close to the Taylor Glacier terminus, the JCVI researchers found a eukaryote community that they suggest arrived in the valley with ancient seawater.

“This is an environment that looks almost completely cut off from the ocean today,” said lead author Angela Zoumplis, of Yale and JCVI. “But when we looked at the molecular signatures of the organisms living in the red mud and sediment around Blood Falls, we saw a surprisingly strong marine signal. That tells us this place may be preserving traces of an older connection between the Dry Valleys and the sea.”

Even though glaciers are made of water ice, Antarctica’s McMurdo Dry Valleys are not just some of the planet’s coldest deserts, but also the driest. In this location, extremophiles survive on the edges of some of our planet’s most challenging living conditions.

Extremophile Laboratory

Previous work discovered bacteria persisting in the Blood Falls brine, but the new research is the first to discover a significantly larger life form: eukaryotes such as diatoms. The term eukaryote refers to single-celled organisms with a nucleus. Within this group, diatoms are noted for their silica shells and their highly specific preference for certain habitats.

As they analyzed 167 samples collected in the region, the team identified diatoms associated with marine environments only in the Blood Falls discharge, but not in the surrounding lakes and streams, or even in air samples.

“We were not just asking whether marine organisms were present,” Zoumplis said. “We wanted to know whether they were part of a distinct community, whether they looked different from nearby freshwater communities, and whether there was evidence that they were active. The answer to all three was yes.”

Antarctic Analysis

Laboratory techniques applied to the samples included examining their RNA with metatranscriptomics and molecular sequencing. In the Blood Falls samples, the team’s analysis revealed between 60% and 80% of the diatoms were marine-associated. The samples from other locations were primarily composed of land and freshwater diatoms. 

Notably, these weren’t just dying remnants of diatom communities that had been swept into the Antarctic—they displayed gene activity related to survival under these extreme conditions.

“That activity is what makes the finding especially exciting,” Zoumplis said. “We are not simply seeing genetic leftovers. We are seeing evidence of organisms responding to a harsh, changing environment — freezing, thawing, salt stress, iron exposure, and long periods of inactivity.”

While the discovery does not entirely rule out that the diatoms arrived via wind, this is unlikely based on the prevalence of marine species specifically in the Blood Falls samples. The researchers note the area’s unusual chemistry, providing a brine rich in iron, salt, and silica, in addition to observed survival tactics in the diatom, such as the formation of resting cells.

This community likely isn’t a perfect preservation of an ancient marine ecosystem within a seemingly “lost” portion of the ocean, the researchers say, but the result of continued deposits and selection over time. Rather than providing a perfect record of ancient microbial communities, studying these eukaryotes can provide researchers with information on past climate change and how life survives under the most hostile of conditions.

The paper, “Molecular Evidence for a Relict Marine Community in an Antarctic Dry Valleys Subglacial Brine-Fed System,” appeared in Nature Geoscience on August 3, 2026.

Ryan Whalen covers science and technology for The Debrief. He holds an MA in History and a Master of Library and Information Science with a certificate in Data Science. He can be contacted at ryan@thedebrief.org.

A discovery by archaeologists at the Pre-Pottery Neolithic site of Çemka Höyük in southeastern Turkey is extending the accepted timelines on the origins of ancient ceramic technology.

The discovery, detailed in a new study that appeared in the journal Antiquity, provides some of the earliest evidence yet uncovered for intentionally fired pottery in Southwest Asia. The findings appear to show that the first experimentation with ceramic technology began thousands of years earlier than once believed.

At the heart of the findings are a collection of more than 45 low-fired clay fragments, representing at least nine separate vessels, which researchers unearthed at the site of Çemka Höyük in Mardin Province. The fragments date to approximately 9,350 BC, placing them in a period that predates the widespread adoption of pottery during the seventh millennium BC by nearly two millennia.

The discovery offers an unprecedented glimpse into the earliest stages of ceramic innovation, adding to past discoveries that include early agricultural innovations and remarkably sophisticated monumental architecture associated with famous sites in the region like Göbekli Tepe.

An Ancient Experiment in Ceramics

Rather than evidence of full-scale pottery production, the new study by researchers Ergül Kodaş, Natalia Petrova, Maria Daghmehchi, and Rana Özbal argues that a period of experimentation seems to have begun around 11,500 years ago.

The nine vessels represented by the fragments uncovered at Çemka Höyük showcase simple slab-building techniques, where plant material, and even animal dung was sometimes mixed into the source clay to help improve its performance during the firing process. Further analysis of the samples indicated that they were intentionally heated in controlled, low-heat fires that reached temperatures of roughly 600 to 700 degrees Celsius, which produced permanent ceramic transformation, rather than mere accidental burning.

A Surprise Discovery

Along with the pottery fragments, archaeologists also discovered an unusual variety of clay objects at Çemka Höyük: a type of clay coating that may have once covered organic objects, along with an attachment formed from the same material that seems to have been used for enlarging the capacity of a vessel made from another material, such as stone or wood.

Altogether, the diversity of the artifacts the team uncovered points to strong evidence that early Neolithic communities in the region were already experimenting with clay in a range of different ways, before the widespread adoption of ceramic technologies for pottery production.

This is significant, since the discoveries challenge existing ideas about the emergence of pottery, which suggested that it was quickly adopted as a fully developed technology.

“This new evidence points to an early implementation and demonstrates that ceramic innovation emerged before widespread production and adoption,” the team writes, “developing regionally and progressively rather than through a single invention event.”

“Our analysis of the fired clay items from Çemka shows that the inhabitants of the site experimented with pottery production by selectively using organic temper, low-temperature firing technologies, and slab-construction techniques,” they add.

Ceramic Technology in the Ancient World

The study also places Çemka Höyük within a broader network of early clay experimentation across Southwest Asia. While similar finds have been reported from sites in Türkiye, Syria, Jordan, Iran, and Israel, the Çemka discoveries are now recognized as being among some of the oldest known examples of intentionally fired ceramic technology ever identified in the region.

Even beyond the technical implications of what the team outlines, the new study offers deeper perspectives on the social aspects of such innovations in the ancient world. For instance, to become successful, technologies must offer more than just functionality by becoming ingrained in the everyday lives of a culture.

The evidence suggests that at Çemka Höyük, use of clay underwent gradual transitions from use as a construction material to a medium used for storage and food preparation. This reflects changes in the culinary practices of the era, as well as certain community activities right down to the daily routines of Çemka Höyük’s ancient residents.

Thus, the early experiments outlined in the new study helped to lay the foundation for the sophisticated pottery use and other traditions that would ultimately make their way throughout the region, revolutionizing the ancient Near East with the arrival of one of its earliest technological revolutions.

The team’s new study, “Understanding a first attempt at pottery: early fired containers at Çemka Höyük,” appeared in the journal Antiquity.

Micah Hanks is the Editor-in-Chief and Co-Founder of The Debrief. A longtime reporter on science, defense, and technology with a focus on space and astronomy, he can be reached at micah@thedebrief.org. Follow him on X @MicahHanks, and at micahhanks.com.