NASA has announced plans to return four astronauts from the International Space Station (ISS) earlier than initially scheduled due to a crew member’s health issue encountered in orbit.
According to a statement released by NASA late Friday, the undocking from the ISS is set to take place by 5 p.m. ET on Wednesday, weather permitting at the designated splashdown site off California’s coast.
This marks the first occasion in the 25-year history of the ISS that a mission has been interrupted due to a medical incident in space.
While NASA confirmed a medical issue arose earlier this week, specific details regarding the crew member’s condition or identity have not been disclosed, citing medical privacy regulations.
During a news conference on Thursday, agency officials reassured that the situation is stable, and the decision for early departure is a precautionary measure rather than an emergency evacuation.
NASA Administrator Jared Isaacman stated, “After consulting with Chief Medical Officer Dr. J.D. Polk and agency leaders, we concluded that it’s best for the astronauts to return Crew-11 ahead of schedule.”
The returning crew includes NASA astronauts Zena Cardman and Mike Finke, Japanese astronaut Kamiya Yui, and Russian cosmonaut Oleg Platonov. Crew-11 was initially slated to reach the ISS in early August and remain in the laboratory until late February.
The astronauts will return in the same SpaceX Dragon capsule that transported them to the ISS. If all goes as planned, undocking will occur Wednesday night, with an expected splashdown in the Pacific Ocean around 3:40 a.m. Thursday.
NASA and SpaceX will provide further updates on the precise landing time and location as it gets closer to the undocking.
Post Crew-11’s departure, NASA will maintain one astronaut aboard the ISS to oversee U.S. scientific experiments and operations. Flight engineer Chris Williams launched aboard a Russian Soyuz spacecraft on November 27th and will be joined by Russian cosmonauts Sergei Kud-Sverchkov and Sergei Mikayev.
The next crew is scheduled to launch to the ISS in mid-February, with NASA considering enhancements to this mission, known as Crew-12.
Tragic Incident in California: Death from Death Cap Mushrooms
A California man tragically died last weekend after consuming death cap mushrooms, marking the state’s third fatality linked to these toxic fungi since November. This alarming trend highlights the dangers posed by foraged mushrooms.
Between November 18th and January 4th, California reported an ASTONISHING 35 cases of mushroom poisoning. In a typical year, you would find fewer than five such cases, indicating a significant spike in poisonings.
According to Sheri Cardo, a communications specialist with the state health department, “The numbers we’re dealing with this year are relatively insane.” This spike has prompted serious concerns about mushroom foraging in California.
Following these incidents, a warning was issued by the health department on December 5, advising residents against consuming foraged mushrooms. The advisory specifically noted poisonings concentrated in areas like Monterey and the San Francisco Bay.
The latest fatalities occurred in Sonoma County. The county health department confirmed this as the first death attributed to wild mushrooms this season.
Sonoma County Interim Health Officer, Dr. Michael Stacy, urged residents to only purchase mushrooms from trusted grocery stores, stressing that death cap mushrooms bear a close resemblance to various edible species.
Stacy noted, “Early rains and a mild fall have led to an outbreak of poisonous death cap mushrooms in Northern California,” as he elaborated in a press release issued last Thursday.
The California Poison Control System highlighted that some individuals affected by death cap poisoning spoke Spanish and may have applied foraging practices from their home countries. Heather Hallen-Adams, director of toxicology for the Mycological Society of North America, explained that death cap mushrooms closely resemble other Amanita species that are safe and commonly collected in Mexico.
Death cap mushrooms contain a dangerous toxin known as amatoxin. If ingested, this toxin can severely damage vital organs, including the kidneys and liver. Symptoms of poisoning often take up to 24 hours to manifest, appearing as mild nausea, vomiting, diarrhea, and stomach pain. More severe consequences, such as liver failure, can occur within two to three days.
Hallen-Adams also stated that approximately 90% of fatal mushroom poisonings are linked to amatoxin poisoning, with even a small amount—equivalent to that of a standard sugar cube—being lethal.
Reports indicate that three individuals in California now require liver transplants due to severe wild mushroom poisoning.
The death cap mushroom, scientifically known as Amanita phalloides, is an invasive species that originated in Europe, making its way to California via imported seedlings in the 1930s. It typically thrives near oak trees and occasionally near pines, growing several inches tall, featuring white gills, a pale yellow or green cap, and a distinctive ring around its stem.
Typically, the U.S. Poison Center receives about 52 calls annually regarding amatoxin poisoning, although not all cases are reported to the center.
Mike McCurdy, president of the San Francisco Mycological Society, indicated that the risk for this season may be declining. As an avid mushroom collector, he shared that while he observed many death cap mushrooms during his outings earlier this winter, he has seen significantly fewer lately.
“I think we’re nearing the end,” McCurdy noted after spotting just one death cap mushroom on a recent trip near Lafayette, California.
Artist’s impression of asteroid 2025 MN45. Image credit: NSF-DOE Vera C. Rubin Observatory / NOIRLab / SLAC / AURA / P. Marenfeld.
Asteroids orbiting the sun rotate at varying speeds, providing critical insights into their formation conditions billions of years ago, as well as their internal structure and evolutionary history.
Fast-spinning asteroids may have been propelled by prior collisions with other space rocks, suggesting they could be remnants of larger parent bodies.
To withstand such rapid spinning, these asteroids must possess enough internal strength to prevent fragmentation, a process where an object breaks apart due to its rotation speed.
Most asteroids consist of aggregates of debris, with their construction limiting how swiftly they can spin without disintegrating based on their density.
In the main asteroid belt, the threshold for stable fast rotation is approximately 2.2 hours. Asteroids exceeding this rotation period must be exceptionally strong to remain intact.
The faster an asteroid spins and the larger it is, the more durable its material must be.
A recent study published in the Astrophysical Journal Letters reveals important insights into asteroid composition and evolution, showcasing how the NSF-DOE Vera C. Rubin Observatory is redefining our understanding of solar system discoveries.
This research presents data on 76 asteroids with verified rotation rates.
It includes 16 ultra-fast rotators with periods ranging from approximately 13 minutes to 2.2 hours, along with three extreme rotators completing a full rotation in under 5 minutes.
All 19 newly identified high-rotation objects exceed the length of an American football field (around 90 meters).
Notably, the fastest-spinning known main-belt asteroid, 2025 MN45, has a diameter of 710 meters and completes a rotation every 1.88 minutes.
This combination establishes it as the fastest rotating asteroid discovered, surpassing 500 meters in diameter.
“Clearly, this asteroid must be composed of exceptionally strong material to maintain its structure at such high rotation speeds,” commented Dr. Sarah Greenstreet, an astronomer at NSF’s NOIRLab and the University of Washington.
“Our calculations suggest it requires cohesive forces comparable to solid rock.”
“This is intriguing because most asteroids are believed to be ‘rubble heap’ structures, composed of numerous small rocks and debris that coalesced through gravitational forces during solar system formation and collisions.”
“Discoveries like this incredibly fast-rotating asteroid result from the observatory’s unmatched ability to deliver high-resolution time-domain astronomical data, thus expanding the limits of what we can observe,” stated Regina Lameika, DOE associate director for high-energy physics.
In addition to 2025 MN45, other significant asteroids researched by the team include 2025 MJ71 (rotation period of 1.9 minutes), 2025 MK41 (rotation period of 3.8 minutes), 2025 MV71 (rotation period of 13 minutes), and 2025 MG56 (rotation period of 16 minutes).
All five of these ultra-fast rotators are several hundred meters in diameter, categorizing them as the fastest-rotating subkilometer asteroids known to date, including several near-Earth objects.
“As this study illustrates, even during its initial commissioning stages, Rubin allows us to investigate populations of relatively small, very fast-rotating main-belt asteroids that were previously unattainable,” Dr. Greenstreet concluded.
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Sarah Greenstreet et al. 2026. Light curve, rotation period, and color of the first asteroid discovered by the Vera C. Rubin Observatory. APJL 996, L33; doi: 10.3847/2041-8213/ae2a30
Following a recent winter storm that pummeled California with rain and snow, the state is officially drought-free for the first time in 25 years, as reported by the US Drought Monitor.
December 2000 marked the last occasion when California had no areas classified as “abnormally dry” or experiencing drought.
While this drought-free status is encouraging news for water management, many residents are still dealing with the aftermath of severe atmospheric river storms that led to significant rainfall and widespread flooding. In contrast, high-altitude regions are grappling with heavy snowfall and increased avalanche risks.
Between December 20 and the end of the year, some parts of Northern California received nearly 7 inches of rain, while Southern California saw up to 4 inches. As New Year’s approached, California faced additional rounds of significant rain and flooding, raising the levels of the state’s 17 major reservoirs to an impressive 129% of their average capacity, according to state records.
Steve Wargoman carries Christmas presents from his granddaughter’s flooded home after heavy rain on December 22 in Redding, California. Noah Berger/Associated Press
This wet winter has boosted snowfall in California, which is crucial for the state’s water supply. However, snowfall levels remain below average. In late December, the California Department of Water Resources reported that measurements from 130 stations across the Sierra Nevada reveal a snow water equivalent of 6.5 inches, which is only 71% of the expected average for this time of year.
Nonetheless, officials are optimistic. The key months for snowfall in California—January, February, and March—are still ahead.
“It’s still early in the season, and the state’s water supply this year will ultimately depend on the frequency of storms continuing throughout the winter and early spring,” stated Angelique Fabbiani-Leon, state hydrographer with the Department of Water Resources, in a statement on December 30.
Typically, the Sierra Nevada snowpack provides about 30% of California’s annual water needs.
In contrast to California, other regions in the West, including Nevada, Utah, and Colorado, are enduring persistently dry conditions with snowfall well below normal levels.
Furthermore, in Washington, Oregon, Colorado, Arizona, and New Mexico, over 80% of monitoring stations report a “snow drought,” as defined by snow water equivalents falling below the 20th percentile, according to the National Oceanic and Atmospheric Administration.
Logging extensive areas of boreal forests and submerging the trees in the Arctic Ocean could potentially eliminate up to 1 billion tons of carbon dioxide from the atmosphere each year.
Researchers suggest cutting down wildfire-prone coniferous trees and transporting them through six major Arctic rivers, including the Yukon and Mackenzie, where they can sink within a year.
“Currently, we have forests that sequester significant carbon, but the next challenge is finding ways to store it without burning,” says Wolf Bungen from Cambridge University.
To combat carbon emissions from hard-to-electrify industries, it’s essential to explore methods for atmospheric carbon reduction. While direct air capture technology is costly, tree planting can backfire if the trees end up dying or burning.
Several companies are working on wood burial techniques. For instance, a U.S. initiative, Running Tide, sunk 25,000 tonnes of wood chips off Iceland’s coast but faced shutdown due to environmental concerns.
Approximately 1 trillion tonnes of carbon are stored within the wood, soil, and peat of boreal forests across North Eurasia and North America, a figure expected to rise as climate change accelerates plant growth. However, with increasing wildfire frequency, this carbon could be released.
Bungen and his team previously discovered that wood can survive for up to 8,000 years in cold, oxygen-limited Alpine lakes without decomposing or emitting CO2. Six Arctic rivers transport substantial amounts of logs, with driftwood in deltas estimated to contain over 20 million tons of carbon. Carl Stadie from Germany’s Alfred Wegener Institute was not part of the study.
If every year, 30,000 square kilometers were cleared along each river, placing the wood on river ice in winter and then replanting, it could absorb up to 1 billion tons of CO2 annually, researchers estimate.
However, some US rivers continue to experience biodiversity loss a century after timber removal, warns Ellen Wall of Colorado State University.
“Dumping a massive amount of logs into a river resembles pushing brush into a river,” she notes.
Moreover, if wood becomes lodged on beaches or in tributaries, causing flooding, it could thaw permafrost and increase methane emissions from microorganisms.
“We could see a scenario where the wood aids ocean carbon sequestration, while onshore flooding and melting snow cause carbon release at high altitudes,” warns Merritt Turetsky from the University of Colorado Boulder.
Inadequate cold or oxygen-free conditions may lead to wood decomposition rather than sinking. Driftwood frozen in sea ice is often transported to the Faroe Islands.
“In a worst-case scenario, vast forest areas could be cleared, impacting the carbon they store,” says Stadie.
Roman Dial, a professor at Alaska Pacific University, warns that this proposal may be exploited by commercial logging and could face criticism from all sides of the political spectrum.
“How extensive is the list of potential unintended consequences that could unfold in the Arctic, given our limited understanding?” he questions.
Some regions of the Arctic ocean floor might not be suitable for conservation, according to Morgan Raven at the University of California, Santa Barbara. However, others could benefit from exploration, given the substantial influx of wood into the Arctic and other oceans. The Earth once experienced a greenhouse climate era 56 million years ago.
“We can investigate sediments and rocks to understand how this experiment was conducted in the past,” Raven concludes.
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How Microbial Activity in the Gut Affects Sleep Quality
Oleksandra Troian / Alamy
Research indicates that diet, particularly dietary fiber, may significantly influence sleep quality.
Prior studies have revealed associations between various sleep states and the gut microbiome. Notably, a lack of bacterial diversity suggests that improving dietary habits could enhance sleep quality. However, no study has yet identified specific microbial species consistently linked to sleep quality and the exact foods that support their growth.
A new systematic review by Wang Che from China’s Shandong First Medical University analyzes 53 observational studies comparing the gut microbiota of individuals with sleep disorders to those without, encompassing 7,497 individuals with sleep disorders and 9,165 without.
The researchers discovered that the overall bacterial species diversity, termed alpha diversity, was significantly lower in individuals suffering from sleep disorders. Those with insomnia, obstructive sleep apnea, or REM sleep behavior disorder showed a notable decrease in anti-inflammatory, butyrate-producing bacteria like Faecalibacterium, alongside an increase in pro-inflammatory bacteria such as Collinsella.
This underscores the importance of dietary fiber, as Faecalibacterium produces butyrate, which provides energy for colon cells, strengthens the intestinal barrier, and reduces inflammation, according to recent studies.
Researchers highlighted that microbial signatures could serve as criteria to differentiate clinical symptoms from other sleep-related issues, thus enabling targeted treatments.
According to Catherine Maki from the National Institutes of Health in Maryland, this study aligns with her group’s ongoing research, which has found a similar connection between sleep and butyrate production from Faecalibacterium.
“Collectively, these consistent findings highlight plausible microbiome metabolic pathways that link sleep and host physiology, warranting direct testing in future mechanistic and interventional studies,” Maki notes.
“This meta-analysis supports the correlation between Faecalibacterium and insomnia,” states Elizabeth Holzhausen from Michigan State University. “However, since these studies are observational, causality cannot be established.”
One hypothesis is that insomnia may negatively impact dietary fiber intake, leading to reduced levels of Faecalibacterium. Alternatively, reduced butyrate from Faecalibacterium could influence sleep quality, as suggested by research findings.
Controlled intervention studies are essential for confirming the causal relationship, Holzhausen emphasizes.
The findings further highlight the vital role of the gut microbiome in our sleep health and reveal potentially significant changes in gut microbial signaling pathways related to sleep-influencing processes such as hormone release, metabolism, and inflammation.
Maki suggests that while it’s too early to recommend increasing fiber intake to improve sleep, there is emerging evidence regarding dietary aspects that may influence sleep.
Some evidence suggests that certain foods, like tart cherry juice, can improve sleep quality. Improving overall dietary quality and increased fiber intake is linked to better sleep quality, though the specific dietary components influencing this relationship remain unclear.
NASA’s SpaceX Crew-11 Team to the International Space Station
SpaceX
In a historic event, astronauts have been evacuated from the International Space Station (ISS) for medical reasons for the first time. The specific medical condition has not been disclosed to maintain privacy, and the astronaut affected remains unnamed. However, four of the seven crew members aboard the ISS returned to Earth ahead of schedule.
The returning astronauts are part of the Crew-11 mission, which launched on August 1 and was initially scheduled to conclude in late February. During a press conference on January 8, NASA Administrator Jared Isaacman noted that nearly all mission objectives had been achieved, enabling an early return.
“This is not an emergency evacuation; the astronaut is stable,” stated NASA’s Chief Medical Officer James Polk. Isaacman further emphasized that while emergency medical evacuation was possible within hours, the actual crew evacuation would occur within days.
Although medical incidents aboard the ISS are not unprecedented, they have typically been manageable in orbit. “The ISS is equipped with robust medical facilities, but it lacks the comprehensive resources of an emergency department,” Polk explained. The severity of this recent incident necessitated that the crew return to Earth for complete medical assessment.
The four Crew-11 members (including two NASA astronauts, one Russian, and one Japanese astronaut) will return via the Dragon spacecraft that transported them to the ISS, despite only one experiencing a medical issue. Preparations are in place at Earth-based medical facilities to ensure affected crew members receive the necessary care. While the situation is without precedent, Isaacman assured that the return process aligns closely with regular protocols.
“Historical models over the last 25 years suggest medical evacuations should occur approximately every three years, yet this is the first such instance,” Polk remarked.
Following this evacuation, a NASA astronaut and two Russian cosmonauts will continue their research aboard the ISS until the Crew-12 mission arrives, originally planned for February 15, but potentially rescheduled due to this incident.
Artist’s Impression of CarbSAR Satellite Orbiting the Earth
Credit: Oxford Space Systems
Britain’s newest satellite, **CarbSAR**, is set to launch on Sunday, equipped with cutting-edge knitwear technology. This innovative satellite will deploy a mesh radar antenna crafted using machinery typically found in textile manufacturing.
“We utilize a standard industrial knitting machine for jumpers, enhanced with features tailored to create specialized threads,” says Amur Raina, Director of Production at Oxford Space Systems (OSS) in the UK.
OSS collaborates with Surrey Satellite Technology Limited (SSTL) to install the antenna on a compact, cost-effective spacecraft capable of capturing high-resolution images of the Earth’s surface.
If successful, this unique design could be integrated into the UK Ministry of Defence’s (MoD) surveillance satellite network later this year.
The “wool” utilized in OSS’s weaving process is ultra-fine tungsten wire, coated with gold. The machines produce several meters of fabric simultaneously, which are then cut into segments and sewn into 3 millimeter-wide discs. These discs are tightly stretched over 48 carbon fiber ribs to form a smooth parabolic dish optimized for radar imaging.
The key innovation lies in the structural design, where each rib wraps radially around a central hub, resembling a 48-coil tape measure. This unique design enables the entire assembly to collapse down to just 75 cm in diameter, drastically reducing the volume of the 140-kilogram CarbSAR satellite during launch.
Upon reaching orbit, the stored strain energy in the bent carbon fibers will allow the ribs to return to their original shape, thereby pulling the mesh into a precise parabolic configuration.
“For optimal imaging, we must deploy it accurately to achieve the perfect parabolic shape,” adds Sean Sutcliffe, CEO of OSS. “Our design’s precision is its standout feature.” Testing has shown the mesh sheet remains within 1 millimeter of its ideal shape, ensuring exceptional performance.
The demand for Earth observation via small radar satellites is on the rise, thanks to their ability to image the ground in all weather conditions and even at night—a capability increasingly appreciated by emerging space companies.
This data is particularly sought after by military forces globally and played a crucial role as an intelligence resource during the recent Russian-Ukrainian conflict.
Despite once leading Europe in space radar developments in the 1990s, the UK has fallen significantly behind in the international arena.
With CarbSAR and the upcoming MoD constellation named Oberon, part of the broader ISTARI program, UK aerospace engineers have a chance to re-establish their presence in the industry.
“We’re seeing heightened interest from foreign governments in radar solutions,” states Andrew Cawthorn, Managing Director of SSTL. “Our primary focus is demonstrating that we can successfully deploy this antenna and capture images.”
CarbSAR is engineered to detect objects as small as 50 cm, sufficient for identifying tanks and aircraft.
After deployment, approximately two days post-liftoff, the Royal Space Force, supervised by the Royal Air Force, will closely monitor the antenna’s performance.
“CarbSAR symbolizes the innovative spirit and collaboration of one of the UK’s leading space companies,” said Major General Paul Tedman, Commander of the UK Space Force. “We eagerly anticipate seeing CarbSAR operational and exploring how its advanced technologies can enhance Oberon and our comprehensive ISTARI satellite initiative.”
Quantum Computers and Heisenberg’s Uncertainty Principle
Marijan Murat/DPA/Alamy
The Heisenberg Uncertainty Principle imposes limits on the precision of measuring specific properties of quantum entities. However, recent research suggests that utilizing quantum neural networks may allow scientists to circumvent this barrier.
For instance, when analyzing a chemically relevant molecule, predicting its properties over time can prove challenging. Researchers must first assess its current characteristics, but measuring quantum properties often leads to interference between measurements, complicating the process. The uncertainty principle asserts that certain quantum attributes cannot be accurately measured at the same time; for example, gaining precise momentum data can distort positional information.
According to Zhou Duanlu from the Chinese Academy of Sciences, recent mathematical insights indicate that quantum neural networks may address these measurement challenges more effectively.
Zhou’s team approached this issue from a practical standpoint. For optimal performance of quantum computers, understanding the properties of qubits—quantum computing’s fundamental components—is crucial. Typical operations, akin to dividing by 2, are employed to yield information about qubits. Yet, the uncertainty principle presents challenges akin to the incompatibility encountered when attempting to execute several conflicting arithmetic operations simultaneously.
Their findings propose that leveraging quantum machine learning algorithms, or Quantum Neural Networks (QNNs), could effectively resolve the compatibility issues inherent to quantum measurements.
Notably, these algorithms rely on randomly selected steps from a predefined set, as shown in previous studies. Zhou et al. demonstrated that introducing randomness into QNNs can enhance the accuracy of measuring a quantum object’s properties. They further extended this approach to simultaneously measure various properties typically constrained by the uncertainty principle, using advanced statistical techniques to aggregate results from multiple random operations for improved precision.
As noted by Robert Fan, this capability to measure multiple incompatible properties swiftly could accelerate scientific understanding of specific quantum systems, significantly impacting quantum computing fields in chemistry and material sciences, as well as large-scale quantum computer research.
The practicality of this innovative approach appears promising, though its effectiveness will hinge on how it compares against other methodologies employing randomness to facilitate reliable quantum measurements, Huang asserts.
A corrective approach to alter a man’s microbiome prevented excessive alcohol production in his body.
Science Photo Library / Alamy
A Massachusetts man experienced severe inebriation due to his intestines autonomously producing alcohol, a condition known as autobrewer syndrome. His recovery began after ingesting fecal bacteria from a healthy donor.
This retired U.S. Marine, in his 60s, faced unusual symptoms following multiple antibiotic treatments for prostate inflammation. Until then, he maintained good health and only occasionally drank alcohol. His sudden, overwhelming intoxication left him disoriented and lethargic.
He sought help at emergency rooms repeatedly, but medical staff were skeptical about his claims of not drinking. Eventually, a diagnosis of autobrewer syndrome—a rare condition where gut microbes produce excessive alcohol—was confirmed.
His severe inebriation hindered routine activities, and he even required breathalyzer locks on his vehicles to avoid legal issues.
After connecting with a patient support group, he discovered fecal transplants could potentially treat his condition. This led him to contact Dr. Elizabeth Homan from Massachusetts General Hospital.
Initially, Dr. Homan dismissed his voicemail messages, as he sounded intoxicated. Eventually, the man’s wife reached out, explaining the situation, which prompted a collaboration with Dr. Bernd Schnabl, an expert on autobrewer syndrome. Together, they planned a fecal transplant for him.
Prior to the procedure, Homan, Schnabl, and their team conducted a comprehensive study on the causes of autobrewer syndrome. They analyzed stool samples from 22 patients with the condition and 21 healthy relatives, looking for variations in gut bacteria. “Our lab had a distinct smell,” Schnabl recollects.
The research revealed that fecal samples from patients produced significant alcohol when cultured, likely due to high levels of specific intestinal bacteria such as Escherichia coli and Klebsiella pneumoniae, which ferment sugars to create alcohol. Previous cases had primarily linked the syndrome to excessive yeast growth.
To treat the Massachusetts man, Homan administered oral capsules derived from a healthy male donor’s fecal matter, known for having an optimal gut microbiome. “This donor has been carefully selected and is a personal trainer who prioritizes fitness,” she explains. When the capsules were analyzed, researchers noted exceptional gut microbiota within them.
Gradually, the man’s autobrewer syndrome resolved as the harmful alcohol-producing bacteria in his gut were replaced with healthier strains from the donor. “One of the highlights of this case was meeting his daughter, a medical school graduate, who expressed gratitude for bringing her ‘old dad back,'” Homan shared.
Schnabl mentions that most individuals likely produce minimal alcohol in their intestines due to the presence of Escherichia coli and Klebsiella pneumoniae. However, significantly elevated levels lead to inebriating alcohol production, often triggered by long-term antibiotic use that disrupts the microbiome, which was the case for this patient.
Currently, Homan and Schnabl are conducting a large-scale trial to assess the effectiveness of oral fecal transplants for other patients with autobrewer syndrome.
Recent archaeological findings have unveiled traces of two toxic plant alkaloids, bupandoline and epibufanisin, in artifacts discovered at the Umhlatuzana Rock Complex in KwaZulu-Natal, South Africa. These artifacts, known as lined microliths, date back approximately 60,000 years, providing evidence of poisoned weaponry from the Late Pleistocene era.
A lined microlith from the Umhlatuzana Caves, showing residues of bufanidrine and epibufanisin, along with reddish toxic glue attached to the tool. Image credit: Isaksson et al., doi: 10.1126/sciadv.adz3281.
Professor Marlies Lombard from the University of Johannesburg remarked, “This represents the earliest direct evidence of arrow poison used by humans.”
“Our research reveals that early humans in southern Africa invented the bow and arrow much earlier than previously believed and utilized natural compounds to enhance hunting efficiency.”
Using gas chromatography-mass spectrometry, Lombard and her team analyzed residues from 10 quartz microliths, identifying bufanidrine and epibufanisin in five of them.
These compounds are derived from the Amaryllidaceae plant family, which is indigenous to southern Africa.
The likely source is a plant species known as Buffondistica, historically associated with arrow poisons.
The residue patterns indicate that the Umhlatuzana microlith had a transverse handle and served as an arrow tip.
Visible poison residue along the dorsal part of some artifacts suggests that toxic compounds were incorporated into the adhesive used to attach the stone tip to the arrow shaft.
The presence of minor impact scars and edge striations supports its use as a tip for horizontally-handled arrows.
To validate their results, researchers compared the ancient residues with poisons extracted from 18th-century arrowheads in South Africa.
“Finding the same poison in both prehistoric and historical arrowheads was crucial,” stated Professor Sven Isaksson of Stockholm University.
“Through detailed analysis of the chemical structures, we confirmed that these materials can endure underground for extended periods.”
This groundbreaking discovery pushes the timeline for toxic weapons back significantly.
Previously, the oldest known arrow poisons were dated to the mid-Holocene, but the findings from Umhlatuzana demonstrate their use as far back as 60,000 years ago.
The authors explain that poisoned arrows are designed not for immediate kills, but to weaken animals over time, allowing hunters to track prey over great distances.
“Utilizing arrow poison requires foresight, strategy, and a keen understanding of natural effects,” noted Professor Anders Högberg from Linnaeus University.
“This indicates a level of cognitive sophistication in early human behavior.”
For further details, refer to the study published on January 7th in Scientific Advances.
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Sven Isaksson et al. 2026. Direct evidence of poison use in microlithic arrowheads from southern Africa, dating back 60,000 years. Scientific Advances, 12(2);doi: 10.1126/sciadv.adz3281
Revolutionary findings from the Atacama Large Millimeter/Submillimeter Array (ALMA) have uncovered scorching intracluster gas in the young galaxy cluster SPT2349-56, just 1.4 billion years post-Big Bang. This groundbreaking discovery challenges existing models of galaxy cluster evolution.
Artist’s impression of the forming galaxy cluster SPT2349-56, showcasing radio jets from active galaxies within a hot intracluster atmosphere. Image credit: Lingxiao Yuan.
The SPT2349-56 galaxy cluster is located approximately 12.4 billion light-years away, providing a glimpse into the universe when it was only 1.4 billion years old, or about ten percent of its current age.
This compact protocluster hosts multiple actively growing supermassive black holes and over 30 starburst galaxies.
These starburst galaxies are forming stars at a staggering rate—1,000 times faster than the Milky Way—and are densely packed within a space only three times larger than the Milky Way itself.
“We were not prepared to discover such a hot stellar atmosphere at this early stage in the universe’s history,” remarked Dazhi Zhou, a Ph.D. candidate at the University of British Columbia.
Astronomers utilized a unique observation methodology known as thermal observation, particularly employing the Sunyaev Zeldovich (tSZ) Effect.
This approach identifies faint shadows cast by hot electrons in galaxy clusters against the faint cosmic microwave background, rather than the light emitted directly by the gas.
Previously, astronomers believed that galaxy clusters lacked the maturity required for their gas to heat up and evolve during the early cosmic era.
The discovery of hot cluster atmospheres had never been recorded within the initial 3 billion years following the Big Bang.
“SPT2349-56 reshapes our understanding,” stated Professor Scott Chapman, a researcher at Dalhousie University and the University of British Columbia.
“Our findings indicate that the cluster’s atmosphere is superheating remarkably early—just 1.4 billion years after the Big Bang—during a period when we anticipated the gas to be cooler and accumulating slowly.”
“This raises the possibility that the formation of large clusters could heat their gas much more efficiently and intensely than our current models suggest.”
The intense explosion from SPT2349-56’s supermassive black hole, identified as a bright radio galaxy, may be an efficient mechanism for superheating the surrounding gas, according to the study.
This discovery implies that energetic phenomena, such as outbursts from supermassive black holes or violent starbursts, might have played significant roles in rapidly heating the gas in early galaxy clusters within the first billion years of the universe.
This superheating may be crucial for transforming these young, cold galaxy clusters into the vast, hot galaxy clusters observed today.
Current models may require reassessment regarding our understanding of how galaxies and their environments evolve.
This finding marks the earliest direct detection of hot cluster gases, pushing the boundaries of astronomical research into these environments.
The identification of a significant reservoir of hot plasma at such an early cosmic epoch forces scientists to reconsider the sequence and pace of galaxy cluster evolution.
It also generates new inquiries about the interplay between supermassive black holes and galaxy formation in shaping the universe.
“SPT2349-56 serves as an intriguing laboratory,” Zhou commented.
“We are witnessing intense star formation, energetic supermassive black holes, and this superheated atmosphere all confined within young, dense star clusters.”
“There remains a considerable observational gap between this chaotic initial phase and the more tranquil clusters observed later in cosmic history.”
“Mapping the evolution of the universe’s atmosphere over time will be a compelling avenue for future exploration.”
For further reading, see the published results in the journal Nature dated January 5, 2026.
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Zhou D. et al. Detection of hot intracluster gas at redshift 4.3 via Sunyaev Zeldovich. Nature, published online January 5, 2026. doi: 10.1038/s41586-025-09901-3
NASA has announced that four astronauts aboard the International Space Station (ISS) will return to Earth over a month early due to medical issues. This unprecedented evacuation marks the first of its kind in the ISS’s 25-year history.
Due to medical privacy regulations, NASA refrained from disclosing specific details, including the identities of the affected astronauts and the nature of their medical conditions. However, officials confirmed that the overall situation remains stable.
Speaking at a recent news conference, NASA Administrator Jared Isaacman stated that the astronauts are expected to return home in the coming days. An exact timeline for undocking and landing has not yet been provided.
“After consulting with Medical Officer of Health Dr. J.D. Polk and leadership across the agency, we believe returning Crew-11 early is in the best interest of the astronauts,” Isaacman said in a statement.
Inside the International Space Station. NASA
Isaacman noted that further updates would be available within the next 48 hours.
The Crew-11 team evacuating the ISS consists of NASA astronauts Zena Cardman and Mike Finke, Japanese cosmonaut Kamiya Yui, and Russian cosmonaut Oleg Platonov. They had originally arrived in early August with plans to stay until late February.
Dr. Polk reassured the public that the situation is stable, clarifying that the decision to evacuate was made for the well-being of the astronauts, not due to an emergency.
“While the ISS is equipped with sophisticated medical technology, it cannot match the complete resources of a hospital emergency department for thorough patient evaluations,” Polk explained. “In this case, there were multiple medical events which necessitated a careful assessment of the astronauts’ health.”
NASA first made the medical concerns public on Wednesday, when it was revealed that Cardman and Finke were deferring a scheduled spacewalk.
Following the early return of Crew-11, NASA will operate with just one astronaut on the ISS, who will oversee ongoing U.S. scientific operations. Flight engineer Chris Williams launched aboard a Russian Soyuz spacecraft on November 27, accompanied by Russian cosmonauts Oleg Platonov, Sergei Kud-Sverchkov, and Sergei Mikayev.
The subsequent crew is slated to launch to the ISS in mid-February, but Isaacman indicated that NASA may evaluate enhancements for this upcoming mission, known as Crew-12.
This week’s developments present Isaacman’s first significant challenge since taking office on December 18.
Exploring Melaleuca Wetland Forests in New South Wales, Australia
Image Credit: Luke Jeffrey / Southern Cross University
The bark of a single tree can host trillions of bacteria, which may have a crucial yet underappreciated role in regulating greenhouse gases in our atmosphere.
Globally, the total surface area of tree bark is estimated to be around 143 million square kilometers, roughly equivalent to the Earth’s total land area. This extensive area represents a vast microbial environment known as the ashosphere, yet the microorganisms residing there have largely been overlooked by researchers. Learn more.
“It may seem obvious, but we’ve historically ignored tree bark,” states Bob Leung, a researcher from Monash University in Melbourne, Australia. “I had never considered that microbes existed in tree bark, but it makes perfect sense. Bacteria thrive everywhere, so it’s reasonable to expect them in the bark as well.”
Leung and his team initiated their research on a common wetland species known as paperbark (Melaleuca quinquenervia). Their findings revealed that over 6 trillion bacteria inhabit every square meter of tree bark, a density comparable to that found in soil.
Genetic testing of 114 bacterial species indicated that most belong to three primary bacterial families: Acidobacteriaceae, Mycobacteriaceae, and Acetobacteriaceae; intriguing as they remain entirely unclassified by science.
A fascinating characteristic of these microorganisms is their ability to metabolize hydrogen, carbon monoxide, and methane for energy. While hydrogen (H2) itself isn’t a greenhouse gas, it can enhance the warming effect of the atmosphere by reacting with other gases.
Researchers extended their study to include seven additional Australian tree species from diverse habitats, such as Casuarina, rubber trees, and banksias, and assessed their bark’s ability to absorb or emit greenhouse gases both in natural settings and laboratory experiments.
Under aerobic conditions, where oxygen is present, all bark types were found to consume hydrogen, carbon monoxide, and methane. However, when the trees were submerged in water—typical in wetland areas—the microbes adapted by producing these same gases.
Melaleuca quinquenervia trees in an Australian forest”
data-credit=”Luke Jeffrey / Southern Cross University”/>
The Canopy of Melaleuca quinquenervia
Image Credit: Luke Jeffrey / Southern Cross University
According to researchers, the collective amount of hydrogen absorbed by bark microorganisms worldwide is estimated to be between 600 million and 1.6 billion kilograms annually, which represents about 2% of the total hydrogen removed from the atmosphere.
This groundbreaking study marks the first effort to evaluate the role of tree bark in atmospheric hydrogen cycling, notes Luke Jeffrey at Southern Cross University in Lismore, Australia.
“Recognizing the hidden contributions of trees, beyond their role in carbon dioxide absorption, is crucial,” emphasizes Jeffrey. “Trees actively engage with other greenhouse gases, which is significant as H2 interacts with atmospheric methane and could help mitigate the increasing methane dilemma.”
However, the global landscape remains uncertain since the team evaluated only eight tree species from eastern Australia. “Significant research is needed across diverse forest types, tree varieties, microbial communities, and environmental conditions,” says Jeffrey.
Brett Somerelle of the Sydney Botanic Gardens asserts that this research underscores the gaps in our understanding of microbial diversity, composition, and functionality within tree bark ecosystems. “It will be fascinating to observe how these factors change across a broader spectrum of tree species, particularly in arid environments like savannahs and woodlands,” notes Summerell.
Understanding the relationships between fungi and bacteria in tree bark is equally critical, he adds.
President Donald Trump’s controversial choice to withdraw the United States from key United Nations-affiliated organizations means the country risks losing its significant role in crucial global climate change discussions.
In a sweeping executive order issued on Wednesday, President Trump halted U.S. funding for 66 international bodies, including the United Nations Framework Convention on Climate Change (UNFCCC)—an agreement the U.S. joined in 1992—and the Intergovernmental Panel on Climate Change (IPCC), which releases the most authoritative climate reports globally.
According to a post by the White House, these organizations are deemed “no longer in the interest of the United States.”
This action underscores the Trump administration’s retreat from climate action, coinciding with escalating global warming effects, which are leading to more frequent and severe weather disasters across the U.S. Events like wildfires, floods, and hurricanes now inflict tens of billions in damages annually. By 2025, it’s projected that 23 extreme weather events will individually cause damages exceeding $1 billion, totaling approximately $115 billion, according to an analysis from Climate Central.
This withdrawal signifies the Trump administration’s rejection of climate diplomacy, further isolating the United States from the global community’s efforts to reduce warming and mitigate the most severe climate change impacts.
In January 2025, the U.S. is set to finalize its exit from the Paris Agreement, a pivotal accord signed in 2016, where 195 participating countries committed to limiting greenhouse gas emissions to prevent global temperatures from rising by more than 1.5 degrees Celsius (2.7 degrees Fahrenheit), with a maximum increase of 2 degrees Celsius.
The UNFCCC provided the foundational framework for the Paris Agreement, established in 1992 to identify and tackle the main contributors to greenhouse gas emissions. The treaty was signed by President George Bush after receiving Senate approval with a two-thirds majority vote.
Should the U.S. fully withdraw from the UNFCCC (a process estimated to take a year), it would mark the first instance in history of a country exiting such an agreement. This action could complicate future presidents’ ability to rejoin the Paris Agreement, as reentry requires new Senate approval with a two-thirds majority.
Extracting itself from the UNFCCC would render the United States the only nation without a presence at international climate discussions, as demonstrated by the White House’s decision to forgo an official delegation at the recent COP30 summit in Brazil.
Attendees arrive at COP30 in Belém, Brazil, November 7, 2025. COP 30 Press Office/Anadolu/Getty Images
“Historically, even countries that remained passive at negotiations seldom walked away entirely, as it ensured their input was not disregarded,” stated Christy Ebi, a climate scientist from the University of Washington who has contributed to IPCC reports.
Ebi noted that while past U.S. administrations may have shown limited enthusiasm during discussions, they still tracked proceedings.
“Delegates would listen quietly from the sidelines, but now there’s a complete withdrawal,” she remarked.
The Trump administration has openly criticized the UNFCCC and similar organizations. In a statement, Secretary of State Marco Rubio referred to them as “anti-American and ineffective.”
The United States is set to officially exit the Paris Agreement on January 27, marking nearly a year since the administration initiated the withdrawal process.
However, questions persist about whether President Trump can withdraw from the UNFCCC without Congressional approval.
Gene Hsu, an attorney with the Center for Biological Diversity, argues the action is unlawful. “The Constitution clearly outlines the process for joining a treaty with a two-thirds Senate majority but is ambiguous regarding withdrawal,” Suh explained. “We are considering legal action due to the absence of legal precedence for a president unilaterally exiting a Senate-approved treaty.”
The UNFCCC is the global mediator for climate negotiations, organizing the Conference of the Parties (COP) annually to address emissions targets and funding for climate action. The previous year’s conference focused on deforestation challenges and impacts on the Amazon rainforest.
“Hosting such global discussions is akin to managing the Olympics; organizational support is essential,” Ebi said.
Following the U.S. withdrawal from the Paris Agreement, the UNFCCC encountered a budget crisis, prompting Bloomberg Philanthropies, led by former New York City Mayor Michael Bloomberg, to intervene financially to sustain operations.
In response, UNFCCC Executive Director Simon Steele asserted that Trump’s withdrawal would “diminish America’s security and prosperity.”
“Similar to the previous Paris Agreement, there remains an opportunity for the United States to re-engage in the future,” Steele remarked.
Throughout his inaugural year, President Trump has targeted climate change through substantial budget cuts, labeling it a “swindle.” His administration has worked to undercut key climate reports, such as the National Climate Assessment, while attempting to diminish the Environmental Protection Agency’s authority to regulate greenhouse gas emissions contributing to global warming.
Former Vice President Al Gore, a dedicated climate activist, commented on X that the Trump administration has “neglected the climate crisis from the outset,” putting Americans and global communities at risk while catering to oil industry interests.
“By withdrawing from the IPCC, UNFCCC, and other vital international collaborations, the Trump administration is undermining decades of carefully cultivated diplomacy, eroding climate science, and instilling global distrust,” Gore concluded.
Stunning image from the James Webb Space Telescope revealing an Einstein Ring formed by two distant galaxies.
Image Credit: ESA/Webb, NASA & CSA, G. Mahler
As we approach 2026, we’re stepping into a year rich with galactic exploration.
We’ll witness the beginning of the Vera C. Rubin Observatory’s deep dive into the space-time legacy, alongside a potential launch of NASA’s Nancy Grace Roman Space Telescope.
Both observatories are pivotal for galaxy observation, aimed at cataloging and unraveling the complexities of galaxy structures and behavior. Expect significant updates on galactic findings in the upcoming months!
As excitement grows for the wealth of information we’ll receive on galaxies, it’s notable that my early interest skewed towards active galactic nuclei (AGNs)—galaxies boasting supermassive black holes that release immense energy as they consume matter near the event horizon. Admittedly, I was drawn to AGNs primarily for their black hole attributes.
During my PhD journey, my curriculum mandated multiple courses on galaxies, which initially overwhelmed me. Galaxies are classified by shape, each category diving into further sub-categories, revealing a perplexing web of classifications. This complexity often felt devoid of mathematical logic, highlighting a possible divide between theorists and experimentalists.
If only I could rewind time and tell my younger self that the challenges in galaxy classification were what deserved my attention.
One of the core challenges in this research realm is that galaxies only manifest as 2D images in the night sky; we lack the ability to perceive them in three dimensions or to observe their rotation due to their enormity. Thus, we rely on these frozen snapshots in time, interpreting their classification based on scientific judgment and taste.
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The shape of a galaxy offers fascinating insights into its evolutionary history – elliptical galaxies typically harbor older stars. “
Historically, Edwin Hubble devised a classification system for galaxies that remains influential today. He defined three fundamental shapes: elliptical, spiral, and irregular. Notably, lenticular galaxies, while appearing spiral, lack an actual spiral structure.
Gérard de Vaucouleurs expanded this classification by incorporating subcategories to identify patterns within galaxy shapes. However, the efficacy of these classifications hinges on the quality of the underlying dataset. A century ago, during Hubble’s time, the datasets were rudimentary, lacking knowledge of dark matter—a critical component now understood to inhabit galaxies.
Galaxy shapes serve as indicators of evolutionary history; for instance, elliptical galaxies often house older stars and lie closer in proximity to galaxy clusters. Furthermore, the assembly and evolution history of these galaxies relates intricately to the configuration of their surrounding dark matter halos.
Additionally, galaxy shapes can unveil secrets about dark energy, which accelerates the universe’s expansion. The Roman Space Telescope aims to deepen our understanding in this regard.
The Vera Rubin Observatory will extend its observational prowess, particularly focusing on dwarf spheroidal galaxies—dim, circular galaxies devoid of substantial star mass. These dwarf galaxies frequently accompany larger counterparts, helping to illuminate the evolutionary structure of the universe.
Excitingly, the scientific teams behind the Rubin and Roman telescopes are collaboratively strategizing on how best to utilize the forthcoming data. As we honor the legacies of Vera C. Rubin and Nancy Grace Roman, 2026 heralds a new generation dedicated to exploring galaxies in extraordinary detail.
What I’m currently reading: Twilight novel series.
What I see: Correct, the Twilight movie series.
What I’m working on: I’m diligently finishing the draft of my third book: Cosmos is a Black Aesthetic.
Chanda Prescod-Weinstein is an associate professor of physics and astronomy at the University of New Hampshire. She is the author of Turbulent Universe and upcoming works The Ends of Space and Time: Particles, Poetry, and the Boogie of Cosmic Dreams.
El Capitan Supercomputer: Power Play in Quantum Computing
Credit: LLNL/Garry McLeod
The advancement of large quantum computers offers the potential to solve complex problems beyond the reach of today’s most powerful classical supercomputers. However, this leap in capability may come with increased energy demands.
Currently, most existing quantum computers are limited in size, with less than 1,000 qubits. These fragile qubits are susceptible to errors, hindering their ability to tackle significant issues, like aiding in drug discovery. Experts agree that to reach practical utility, a Fault-Tolerant Quantum Computer (FTQC) must emerge, with a much higher qubit count and robust error correction. The engineering hurdles involved in this pursuit are substantial, compounded by multiple competing designs.
Olivier Ezratty, from the Quantum Energy Initiative (QEI), warns that the energy consumption of utility-scale FTQCs has been largely overlooked. During the Q2B Silicon Valley Conference in Santa Clara, California, on December 9, he presented his preliminary estimates. Notably, some FTQC designs could eclipse the energy requirements of the world’s top supercomputers.
For context, El Capitan, the fastest supercomputer globally, located at Lawrence Livermore National Laboratory, draws approximately 20 megawatts of electricity—three times that of the nearby city of Livermore, which has a population of 88,000. Ezratty forecasts that FTQC designs scaling up to 4,000 logical qubits may demand even more energy. Some of the power-hungry designs could require upwards of 200 megawatts.
Ezratty’s estimates derive from accessible data, proprietary insights from quantum tech firms, and theoretical models. He outlines a wide energy consumption range for future FTQCs, from 100 kilowatts to 200 megawatts. Interestingly, he believes that three forthcoming FTQC designs could ultimately operate below 1 megawatt, aligning with conventional supercomputers utilized in research labs. This variance could significantly steer industry trends, particularly as low-power models become more mainstream.
The discrepancies in projected energy use stem from the various strategies that quantum computing companies employ to construct and maintain their qubits. For instance, certain qubit technologies necessitate extensive cooling to function effectively. Light-based qubits struggle with warm light sources and detectors, leading to heightened energy consumption. Similarly, superconducting circuits require entire chips to be housed in large refrigeration systems, while designs based on trapped ions or ultracold atoms demand substantial energy input from lasers or microwaves to precisely control qubits.
Oliver Dial from IBM, known for superconducting quantum computers, anticipates that his company’s large-scale FTQC will need approximately 2 to 3 megawatts of power, a fraction of what a hyperscale AI data center could consume. This demand could be lessened through integration with existing supercomputers. Meanwhile, a team from QuEra, specializing in ultracold atomic quantum computing, estimates their FTQC will require around 100 kilowatts, landing on the lower end of Ezratty’s spectrum.
Other companies like Xanadu, focusing on light-based quantum technologies, as well as Google Quantum AI, centered on superconducting qubits, have opted not to comment. PsiQuantum, another light-based qubit developer, was unavailable for a response. New Scientist has made multiple attempts for their insights.
Ezratty also pointed out that traditional electronics responsible for directing and monitoring qubit operations could result in additional costs, particularly for FTQC systems where qubits need further instructions to self-correct errors. This complexity necessitates understanding how these algorithms contribute to energy footprints. The operational runtime length of quantum computers adds another layer, as energy savings from fewer qubits might be negated if longer operation times are needed.
To effectively measure and report the energy consumption of machines, the industry must establish robust standards and benchmarks. Ezratty emphasizes that this is an integral element of QEI’s mission, with projects actively progressing in both the United States and the European Union.
As the field of quantum computing continues to mature, Ezratty anticipates that his research will pave the way for insights into FTQC energy consumption. This understanding could be vital for optimizing designs to minimize energy use. “Countless technological options could facilitate reduced energy consumption,” he asserts.
As a dedicated nature writer, I strive to nurture a profound connection with the natural world. Observing birds, exploring with children, and discovering beetles beneath fallen logs is what I cherish. Nature embodies complexity and wonder; while I appreciate its beauty, I have never deemed it sacred or considered my relationship with it spiritual.
Yet, current trends indicate I might be overlooking something significant.
The term “nature connectivity” may sound idealistic, yet it is bolstered by a growing body of research. A 2025 study claims that increased feelings of “nature connection” and “oneness with nature” correlate with elevated spirituality and skepticism regarding “science over faith.” Such findings may astonish many in the natural sciences, and they certainly surprised me, but this notion resonates within recent nature-focused literature.
While ancient druids revered nature, cultivating sacred groves of mistletoe and oak, today’s enchantment often unfolds in the nature section of a bookstore, nestled between gardening and self-help. Many of us experience our connection to nature through the act of writing. We become surrogate birders, second-hand botanists, and armchair adventurers. This is perfectly acceptable; life is hectic, and most reside in urban or suburban settings. One of humanity’s great gifts is our ability to be transported through written words to the depths of forests and heights of mountains.
The real concern lies not in how we connect with nature, but in our perception of what we are connecting to. Nature isn’t a fantasy; it occupies the same earthly realm as us, and we are inherently part of it. When viewed through a scientific lens, the natural world remains awe-inspiring and captivating. It is perplexing to separate the beauty of science from a genuine appreciation of nature.
We might benefit from reevaluating our eagerness to extract lessons from nature. Is it possible to learn from moss about unity or understand the repelling forces of grass? Recent naturalists suggest fungi can help us grasp the cycle of life. However, we can also learn troubling lessons from shoebills about the harsh realities of nature, such as expelling weak young or manipulating hosts in dire ways. Seeking wisdom from nature may feel just as rational as consulting ChatGPT for guidance—both resources have extensive insights. Perhaps true enlightenment lies in discovering lessons within ourselves.
Then arises the timeless query: What role do humans play in this ecosystem? Some assert that nature writers need to practice silence. Yet the uncomfortable reality is that all writers appreciate their own voices. We must strike a balance between experiencing the external world and what transpires within us. Both perspectives hold immense value, and the best nature writers skillfully navigate these frontiers, reporting with clarity, expertise, and sensitivity. Broadening the definition of “outside” to include diverse human experiences enriches our narratives.
I hope to see nature writing flourish, embracing its imperfections. I envision it evolving into a richer, more intricate, interdisciplinary tapestry that reflects the dynamic nature of our world, whatever that encapsulates—our realities, the living environment, and our place within it.
Satellite image of Antarctic iceberg A23a displaying meltwater on its surface
NASA
The Antarctic iceberg A23a, comparable in size to a city, is experiencing an alarming build-up of meltwater on its surface, signaling potential fragmentation.
Researchers are captivated by the massive A23a iceberg due to its unique ability to collect and retain meltwater.
Satellite visuals reveal a distinctive raised ice rim encircling the entire cliff-edge of this slab-like iceberg, giving it an intriguing resemblance to an oversized playground. This pooling region spans approximately 800 square kilometers, larger than the city of Chicago.
In several areas, the meltwater appears deep and brilliantly blue, indicating depths of several meters. The total volume of water on A23a is estimated to be in the billions of liters, enough to fill thousands of Olympic-sized swimming pools.
Douglas MacAyeal from the University of Chicago explains that this rim effect is a typical phenomenon observed in the world’s largest icebergs.
“My hypothesis is that the edges curve downward from the nose, forming an arched dam that retains snowmelt,” he states. “This curvature likely results from a combination of wave undercutting and melting ice, as well as the inherent flexibility of vertical ice cliffs.”
The streaks of water visible in the satellite images indicate remnants of past ice flow when these icebergs were still attached to the Antarctic coast, he noted.
Image of iceberg A23-A captured from the ISS on December 27, 2025
NASA
A23a dates back to 1986 and originated from the Filchner-Ronne Ice Shelf, initially being over five times its current size. It once held the distinction of being the largest iceberg on Earth.
In recent years, A23a has drifted north into increasingly warmer waters, leading to its gradual fragmentation. The substantial volume of surface meltwater can ultimately contribute to its collapse. “Should that water seep into its fractures and subsequently refreeze, it will effectively split the iceberg,” remarks Mike Meredith from the British Antarctic Survey.
He contends that the iceberg can deteriorate unexpectedly within a matter of days.
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Lucy MacLean (Ella Purnell) in Fallout Season 2
Amazon MGM Studios
As the new year unfolds, it brings exciting opportunities for change and reinvention. This is the perfect time to explore the best sci-fi and science-related television shows set to premiere in 2026, showcasing groundbreaking series that launched last year. Notably, the second season of Fallout on Amazon Prime Video, airing mid-December, stands out as a must-watch.
Set against a retro-futuristic America, the series dives into a world where generations of humanity live in radiation-resistant bunkers designed by the shadowy Vault-Tec corporation. In the previous season, former vault dweller Lucy (inhabited by Ella Purnell) navigates the surface in search of her missing father, encountering unexpected allies and adversaries. This season, she embarks on a new adventure accompanied by Ghoul (played by Walton Goggins), a visually striking radioactive gunman. What could be more entertaining?
The critically acclaimed Fallout is just one of many bunker-based dramas slated for 2026. On February 23, Hulu/Disney+ will launch the second season of Paradise, featuring Sterling K. Brown as Xavier Collins, a Secret Service agent residing in an underground city built to safeguard the elite from impending apocalypse. After solving the murder of U.S. President Cal Bradford and discovering survivors, he sets off on a journey back to Chicago in search of his estranged wife.
Later this year, the much-anticipated third season of Silo (Apple TV+) will air, which delves into the dark mysteries surrounding the toxic surface world, leaving viewers wanting more. If you enjoy gripping and conspiratorial narratives, this series is not to be missed.
Another intriguing dystopian tale is Dreamland (BBC iPlayer). Set in 2039, it follows Chance, a resident of the British seaside town of Margate, who turns to crime amidst widespread climate change and social inequality. When her community becomes entangled in a government rejuvenation initiative, Chance finds herself in love with Frankie, a woman with connections to the powers that be, revealing a deeper conspiracy.
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In Star City, engineers and intelligence professionals work tirelessly to achieve the historic landing of the first humans on the moon. “
Fans can look forward to the highly anticipated television adaptation of The Testaments (Hulu/Disney+), a sequel to The Handmaid’s Tale, also penned by Margaret Atwood. Premiering in April, it follows a new generation of women navigating freedom while being trained by Gilead’s elite.
In addition to dramatic narratives, the sci-fi genre offers exciting new adventures. Premiering on January 15th, Star Trek: Starfleet Academy (Paramount+) takes us into the 32nd century, chronicling the experiences of a group of Starfleet cadets as they develop friendships and rivalries while training to become future officers. Featuring a talented Gen Z cast alongside stars like Holly Hunter, Tatiana Maslany, and Paul Giamatti, this series promises to be fun for families. Moreover, Star Trek: Strange New Worlds is set to return for its penultimate fourth season early this year.
Following the success of Andor, which set high standards for live-action Star Wars storytelling, fans anticipate the release of season 2 of Star Wars: Ahsoka on Disney+. Though unconfirmed, more animated adventures will soon unfold, such as Star Wars: Maul – Shadow Lord, focusing on the Sith Lord as he rebuilds his crime syndicate following events from The Clone Wars, and Star Wars: Visions Presents – The Ninth Jedi, continuing the journey of Jedi Ethan and Kara.
For Marvel enthusiasts, while Vision Quest is rumored to premiere at the end of 2026, the series will feature the resurrected android superhero Vision, aiming to regain his memory post-WandaVision, alongside familiar faces like Ultron.
If you prefer small-scale robot dramas, be sure to look for Ann Droid (BBC iPlayer), a comedy by Diane Morgan, where she portrays Linda, a social robot designed to partner with the elderly in healthcare. Unexpected friendships blossom as Linda helps solve problems for her reluctant companion, Sue (Sue Johnston). With an impressive cast, this series is expected in 2026.
Fans of sci-fi comedy will also eagerly await the second season of Murderbot (Apple TV+), anticipated to premiere by year-end.
Delving into different realms of artificial intelligence, the adaptation of William Gibson’s seminal cyberpunk novel Neuromancer (Apple TV+) is set to captivate audiences. Following hacker Case (Callum Turner) as he navigates a dangerous futuristic Tokyo after losing his ability to access the virtual reality world, the series is positioned to explore high-stakes conspiracies.
Neuromancer is one of two Cyberpunk-themed series on the horizon, the other being Blade Runner 2099 (Amazon Prime Video). While details remain scarce, we know that Michelle Yeoh will star as a replicant nearing the end of her life in this highly anticipated series.
For technology enthusiasts, check out Altruists and Boldness. Altruists (Netflix) is a limited series due in late 2026 that chronicles the collapse of cryptocurrency exchange FTX alongside the complicated romance between its founder Sam Bankman-Fried and partner Caroline Ellison, while Boldness (AMC) follows CEO Duncan (Billy Magnussen) battling power struggles in Silicon Valley without any real-world parallels.
Let’s venture beyond Earth, with excitement building for Star City (Apple TV+), a spin-off of the acclaimed alternate history series For All Mankind, which returns for its fifth season in 2026. This new series will spotlight the Soviet perspective during the space race, depicting the efforts of astronauts, engineers, and secret agents striving to land the first Russians on the moon.
Other space-centric highlights include the potential launch of the second season of Doctor Who in December and Three-Body Problem, an ambitious adaptation of Cixin Liu’s epic series about humanity’s preparation for an alien invasion set 400 years in the future.
For those who seek gripping narratives, Beauty (FX/Disney+) features FBI agents Cooper Madsen (Evan Peters) and Jordan Bennett (Rebecca Hall) as they become engrossed in the world of high fashion while investigating tragic deaths of supermodels. The series grapples with themes of transformation, premiering on January 22nd—a significant moment for physical reinvention.
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University Centre for General Dermatology and Oncodermatology, Wrocław Medical University
A Polish man experienced a severe allergic reaction to the red ink used in his tattoo, resulting in hair loss, cessation of sweat production, and the development of vitiligo. This alarming case highlights potential adverse effects of certain modern tattoo inks on the immune system.
Tattooing is a time-honored practice that traditionally utilized black soot-based inks and manual techniques. Today, electric tattoo machines are employed to rapidly apply colorful synthetic inks across larger skin areas.
Many dyes found in colored tattoo inks were originally formulated for use in printer inks and automotive paints, not for human application. Reports of allergic reactions to colorful tattoo inks have surged in recent years, particularly among individuals with existing immune issues, such as eczema, asthma, and celiac disease. According to research, around 6% of people report allergic reactions that persist for more than four months, particularly with red ink.
The Polish man’s symptoms began four months post-tattoo application on his forearm. Initially, itched intensely, followed by the emergence of a widespread red rash. Over time, he developed hair loss, yellowing nails, swollen lymph nodes, and an inability to sweat. After two years, he also noticed large patches of vitiligo.
Despite consultations with several specialists, including dermatologists and allergists, the underlying issue remained undiagnosed. It wasn’t until the red ink decorations of his tattoo became visibly inflamed that suspicion arose. A biopsy of a swollen lymph node revealed traces of red ink had migrated from the tattoo site.
Due to limited treatment options, the man underwent eight surgeries to eliminate the problematic red ink and apply skin grafts. Post-treatment, while his hair has regrown and vitiligo has stabilized, he still suffers from permanent dysfunction of his sweat glands, presenting a risk of heat exhaustion and necessitating his resignation from military service, as he must frequently spray himself with water.
Despite attempts, dermatologists at Wrocław Medical University could not obtain a sample of the red ink for analysis. However, past studies have identified synthetic organic dyes, particularly azo dyes, as agents responsible for allergic reactions in red tattoos.
The potential health risks associated with tattoo ink are linked to its chronic activation of the immune system. Most tattoo ink remains on the skin, but some can migrate to lymph nodes. Here, immune cells known as macrophages attempt to eliminate the ink but often fail due to its size. This failure leads to a cycle of immune activation, as macrophages transfer the ink to others, perpetuating the immune response. Dr. Sine Clemmensen of the University of Southern Denmark elaborates on this issue.
The Polish man also had Hashimoto’s disease, an autoimmune condition that may have heightened his sensitivity, resulting in the immune system mistakenly attacking his skin.
Emerging research suggests that even individuals without pre-existing immune conditions might face long-term risks related to tattoos. Clemmensen’s findings indicate that having any tattoo color could triple the risk of developing lymphoma, a cancer affecting the lymphatic system.
In January 2022, following another case similar to that of the Polish man, the European Union initiated measures to enhance tattoo safety by restricting chemicals commonly found in tattoo inks with azo dyes. However, legislation in other regions is still pending.
Alzheimer’s disease presents significant challenges, transforming a cherished family member into someone who often fails to recognize their true self. Many individuals ponder the reasons behind the erosion of memories and personalities. Researchers have identified the primary driver of Alzheimer’s as the accumulation of a brain protein known as Tau.
Under normal circumstances, tau protein plays a crucial role in preserving the health of nerve cells by stabilizing the microtubules, which function as pathways for nutrient transport. However, in Alzheimer’s patients, tau protein becomes twisted and tangled, obstructing communication between cells. These tau tangles are now recognized by medical professionals as a defining characteristic of Alzheimer’s disease, serving as indicators of cognitive decline.
Recent studies have shown that tau tangles correlate with diminished brain function in individuals affected by Alzheimer’s disease. Additionally, the apolipoprotein E4 (APOE4) gene is closely linked to late-onset Alzheimer’s and may exacerbate tau tangling. This gene encodes a protein involved in transporting fats and cholesterol to nerve cells throughout the brain.
A team from the University of California, San Francisco, and the Gladstone Institute has discovered that eliminating APOE4 from nerve cells can mitigate cognitive issues associated with Alzheimer’s. Their research involved specially bred mice exhibiting tau tangles and various forms of the human APOE gene, specifically APOE4 and APOE3. The aim was to determine if APOE4 directly contributes to Alzheimer’s-related brain damage and if its removal could halt cognitive decline.
To investigate the impact of the APOE4 gene, the researchers introduced a virus containing abnormal tau protein into one side of each mouse’s hippocampus. When the mice reached 10 months of age, the team conducted various tests—including MRI scans, staining of brain regions, microscopy, brain activity assessments, and RNA sequencing—to analyze the accumulation of tau protein in the brains of those with and without the APOE4 gene.
The findings revealed significant discrepancies between the two groups. Mice with the APOE4 gene displayed a higher prevalence of tau tangles, a marked decline in brain function, and increased neuronal death, while those with the APOE3 gene exhibited minimal tau deposits and no cognitive decline.
Next, the researchers employed a protein linked to an enzyme called CRE to excise the APOE4 gene from mouse nerve cells, subsequently measuring tau levels with a specialized dye. The results indicated a significant reduction in tau tangles, dropping from nearly 50% to around 10%. In contrast, mice carrying the APOE3 gene saw an even smaller reduction from just under 10% to approximately 3%.
Additionally, a different dye was utilized to quantify amyloid plaques—another protein cluster frequently found in Alzheimer’s cases. The outcomes showed that, following removal of the APOE4 gene, amyloid plaque levels decreased from roughly 20% to less than 10%. Mice with the APOE3 gene, however, displayed no notable change, consistently maintaining around 10% amyloid plaques.
The researchers further analyzed the RNA of the mice to understand how APOE4 affects neurons and other brain cells. Their observations confirmed that the presence of APOE4 correlated with an uptick in Alzheimer’s-related brain cells. This finding helped illustrate that eliminating APOE4 from nerve cells resulted in diminished responses associated with Alzheimer’s disease.
In conclusion, the researchers determined that APOE4 is detrimental and may actively induce Alzheimer’s-like damage in the brains of mice. While further validation in human subjects is needed, the implications of this gene may pave the way for developing targeted therapies for Alzheimer’s disease.
Researchers from the University of Waterloo and Kyushu University have achieved a groundbreaking advancement in quantum computing by developing a novel method to create redundant, encrypted copies of qubits. This represents a pivotal step towards practical quantum cloud services and robust quantum infrastructure.
Google’s quantum computer – Image credit: Google.
In quantum mechanics, the no-cloning theorem asserts that creating an identical copy of an unknown quantum state is impossible.
Dr. Achim Kempf from the University of Waterloo and Dr. Koji Yamaguchi from Kyushu University emphasize that this fundamental rule remains intact.
However, they have demonstrated a method to generate multiple encrypted versions of a single qubit.
“This significant breakthrough facilitates quantum cloud storage solutions, such as quantum Dropbox, quantum Google Drive, and quantum STACKIT, enabling the secure storage of identical quantum information across multiple servers as redundant encrypted backups,” said Dr. Kemp.
“This development is a crucial step towards establishing a comprehensive quantum computing infrastructure.”
“Quantum computing offers immense potential, particularly for addressing complex problems, but it also introduces unique challenges.”
“One major difficulty in quantum computing is the no-duplication theorem, which dictates that quantum information cannot be directly copied.”
“This limitation arises from the delicate nature of quantum information storage.”
According to the researchers, quantum information functions analogously to splitting passwords.
“If you possess half of a password while your partner holds the other half, neither can be utilized independently. However, when both sections are combined, a valuable password emerges,” Dr. Kemp remarked.
“In a similar manner, qubits are unique in that they can share information in exponentially growing ways as they interconnect.”
“A single qubit’s information is minimal; however, linking multiple qubits allows them to collectively store substantial amounts of information that only materializes when interconnected.”
“This exceptional capability of sharing information across numerous qubits is known as quantum entanglement.”
“With 100 qubits, information can be simultaneously shared in 2^100 different ways, allowing for a level of shared entangled information far exceeding that of current classical computers.”
“Despite the vast potential of quantum computing, the no-cloning theorem restricts its applications.”
“Unlike classical computing, where duplicating information for sharing and backup is a common practice, quantum computing lacks a simple ‘copy and paste’ mechanism.”
“We have uncovered a workaround for the non-replicability theorem of quantum information,” explained Dr. Yamaguchi.
“Our findings reveal that by encrypting quantum information during duplication, we can create as many copies as desired.”
“This method circumvents the no-clonability theorem because when an encrypted copy is selected and decrypted, the decryption key is automatically rendered unusable; it functions as a one-time key.”
“Nevertheless, even one-time keys facilitate crucial applications such as redundant and encrypted quantum cloud services.”
Weight loss medications, including Munjaro (tirzepatide), are effective when taken consistently.
Alan Swart / Alamy
A recent study involving over 9,000 participants revealed that individuals who discontinue weight loss medications often regain the weight lost within two years. This finding underscores the notion that obesity should be viewed as a chronic disease necessitating ongoing treatment.
“These medications are very effective; however, obesity is a chronic, relapsing condition,” explained Susan Jebb, who addressed the press at the University of Oxford. “Similar to hypertension medications, these treatments are likely needed for life.”
It’s evident that weight loss medications can significantly aid individuals in combating obesity, particularly newer GLP-1 medications mimicking gut hormones such as glucagon-like peptide 1—examples include semaglutide (Ozempic, Wegovy) and tirzepatide (Mounjaro, Zepbound). These drugs not only facilitate weight loss but also positively impact health metrics like blood pressure and cholesterol levels.
Nevertheless, many patients have ceased using GLP-1 medications due to side effects, including nausea, or a lack of availability triggered by heightened demand. “Approximately half of users discontinue these drugs within a year,” remarks Jebb.
While nations like the United States and parts of Europe permit long-term use of GLP-1 medications for weight control, frameworks like the UK’s National Health Service are restricting semaglutide usage for weight management based on cost-effectiveness evaluations over two years.
Previous studies indicate that individuals often regain weight post-semaglutide discontinuation. Yet, it remains unclear if this pattern extends to other weight loss interventions and the swift occurrence of weight gain upon cessation.
To investigate this, Jebb and colleagues reviewed 37 trials, combining data from over 9,000 participants, all classified as overweight or obese and using some form of weight loss medication (including GLP-1) for about 10 months, followed by a monitoring period of roughly 8 months.
From their analysis, the researchers noted that participants lost an average of 8.3 kilograms and experienced improvements in metabolic parameters like blood pressure, cholesterol, and blood glucose levels.
When examining weight patterns during the follow-up phase, the model suggested participants regained the average weight lost within 1.7 years after stopping their medications.
In trials specifically addressing semaglutide and tirzepatide, participants lost an average of 14.7 kilograms, yet it was anticipated they would regain all lost weight within a year and a half. Jebb points out that further insights are required to understand the accelerated weight gain associated with these drugs compared to others.
Additionally, the team discovered that the weight regain rate after ceasing weight loss drugs was about four times steeper than that observed following the termination of a structured behavioral weight loss program, which typically emphasizes healthy eating and increased physical activity.
However, this disparity may be attributed to the greater motivation for weight loss among individuals participating in behavioral programs compared to those relying on medications.
Another factor contributing to this swift weight regain may be the appetite suppression induced by these drugs. Users often report significant increases in hunger and cravings upon discontinuation, possibly leading to rapid weight resurgence, as noted by Taraneh Soleimani from Pennsylvania State University.
Yet, a separate analysis suggested that offering behavioral support during the follow-up phase did not effectively curb weight gain. Soleimani emphasizes that more research is essential to determine optimal strategies for supporting individuals transitioning off weight loss medications.
What Jebb’s research illustrates, according to her, is the critical need to consider obesity as a long-lasting condition. “Weight loss drugs demonstrate effectiveness, and weight regain is prevalent upon cessation,” states Professor Soleimani. “These results confirm obesity as a chronic condition that requires prolonged treatment.”
Experiencing a post-workout mood boost is common, and a recent review highlights just how impactful this effect can be. Simple activities like walking or gardening can alleviate depression symptoms as effectively as psychotherapy or antidepressants.
“This research reinforces that exercise is a viable option for individuals suffering from depression, showing that it can rival the effectiveness of psychotherapy or medication,” states Andrew Clegg from the University of Lancashire, UK.
A prior Cochrane Library review in 2013 discovered that exercise alleviates depression symptoms comparably to standard treatments like antidepressants and cognitive behavioral therapy (CBT), which focuses on modifying thought patterns and behavior.
Consequently, health authorities advocate regular exercise for depression management. The UK’s National Institute for Healthcare Excellence (NICE) suggests engaging in aerobic activities such as jogging for ten weeks, typically in conjunction with other therapies for optimal results.
Since the 2013 review, numerous clinical trials have surfaced, prompting the Cochrane Library to embark on an updated review. “This new review nearly doubles the existing evidence base from the previous publication,” comments Clegg, a co-author of the review.
Clegg and colleagues reviewed data from 69 randomized controlled trials involving nearly 5,000 adults diagnosed with mild to severe depression or showing elevated depression symptom scores. Their analysis focused on 57 trials where participants were assigned to either an exercise group or a control group receiving no treatment.
Trial methodologies varied significantly, but usually directed participants to maintain a routine of low to moderate exercise—like gardening or brisk walking—compared to more vigorous activities like sprinting or soccer. Yoga and stretching were excluded, as these often incorporate meditative or breathing practices, which detracted from the study’s emphasis on pure physical activity.
The research indicated that exercise modestly reduced depression severity, characterized by feelings of sadness and disinterest in social activities.
“Clinically meaningful improvements were observed—individuals reported noticeable changes,” remarks Brendon Stubbs from King’s College London, who was not part of the review.
Furthermore, the team analyzed ten of the 59 trials that compared exercise to CBT and five trials involving participants on antidepressants devoid of an exercise component. Results indicated that, on average, regular exercise proved equally effective as these treatment modalities. “There was no significant difference in outcomes among the three,” emphasizes Emily Hird from University College London, who also did not partake in the study.
The research highlighted that light to moderate exercise outperformed intense workouts. This may be linked to higher adherence rates; as Stubbs explains, “Strenuous exercises often lead to dropout, thus diminishing the observed benefits.”
While the precise advantages of exercise remain under investigation, Stubbs suggests multiple potential mechanisms. Group activities could enhance social well-being, and acquiring new skills might boost self-esteem, fostering positive life changes.
Studies indicate that muscle-released chemicals, known as myokines, help reduce inflammation, which may exacerbate depression. One particular myokine, brain-derived neurotrophic factor, is known for promoting new brain cell growth, potentially aiding in the reconfiguration of negative thought patterns, as asserted by Stubbs. Interestingly, Clegg’s team discovered that resistance training, which generates more myokines, was more effective than aerobic workouts alone.
Collectively, these findings advocate for exercise as a depression treatment modality. However, since participants were aware of their group assignments, some gains might stem from placebo effects, where expectations influence symptom relief. Additionally, the majority of studies had limited participant numbers, which may impact reliability, according to Hurd.
Hurd advocates for larger studies to investigate optimal exercise types tailored for individuals and their unique challenges. “Currently, we lack clarity on who benefits most from different exercise forms,” she asserts. Individuals with severe depression might struggle to maintain exercise routines and may find more relief through CBT or antidepressants, both of which exhibit effectiveness akin to exercise in managing depression. Furthermore, some individuals may respond preferentially to specific activities based on their depression’s root causes.
Nevertheless, evidence consistently reveals the benefits of exercise for both mental and physical health. “Activities such as running, gym workouts, Pilates, and yoga all impart various positive effects. The most crucial aspect is to engage individuals in activities they enjoy,” concludes Stubbs.
Recent discoveries of hominin fossils in the Thomas Quarry I cave located in Casablanca, Morocco, provide crucial insights into the early origins of homo sapiens. These findings indicate that the lineage leading to modern humans was potentially established in Africa nearly 800,000 years ago. The fossils, although similar in age to the ancestor of homo discovered in Spain, display a mix of primitive and advanced traits reminiscent of post-Eurasian hominins, including homo sapiens.
Reconstruction of homo erectus.
Paleoanthropologists have long debated the origins of Neanderthals and Denisovans, the last common ancestors of modern humans. Genetic studies reveal that this ancestor likely existed between approximately 765,000 and 550,000 years ago, although fossil records are still inconclusive.
While some researchers have posited a Eurasian origin based on fossils unearthed in Atapuerca, Spain, dating back to 950,000 to 770,000 years ago, the new findings from Morocco reinforce the theory of an African origin.
Recent discoveries from the Moroccan cave, including mandible fragments, teeth, vertebrae, and femur pieces, bolster the evidence supporting Africa as the cradle of human evolution.
Analysis of the sediments surrounding these fossils indicates that they date back approximately 773,000 years, coinciding with significant changes in the Earth’s magnetic field, aligning with the era of the ancestor of homo.
Interestingly, the new fossils present distinct morphological differences. The evidence suggests that regional differentiation between Europe and North Africa was already evident by the late Early Pleistocene, spanning from around 1.8 million to 780,000 years ago.
The Moroccan fossils exhibit a blend of primitive features linked to species like homo erectus alongside more modern traits found in homo sapiens and Neanderthals.
For instance, their molar size aligns with earlier homo sapiens fossils, while the jaw shape resembles that of Neanderthals and other African archaic humans.
Although the Moroccan fossil may not serve as the ultimate last common ancestor of modern humans, Neanderthals, and Denisovans, it is likely a close precursor.
“The Moroccan fossils likely represent an advanced form of homo erectus in North Africa, situated on a lineage close to the evolutionary divergence between African and Eurasian lineages,” stated the researchers.
“Our findings underscore the Maghreb region as vital for understanding the emergence of our species and strengthen the argument for an African origin of homo sapiens,” they concluded.
Findings are detailed in a recent study published in Nature.
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J.J. Havlin and colleagues. Early human fossils from Morocco and the emergence of homo sapiens. Nature, published online January 7, 2026. doi: 10.1038/s41586-025-09914-y
An in-depth analysis of the stresses, tides, and internal forces on Jupiter’s icy moon Europa indicates that the moon lacks the active submarine faults essential for robust hydrothermal circulation. This phenomenon significantly impacts Europa’s chemical energy and overall habitability.
A stunning view of Europa’s surface. Image scale is 1.6 km per pixel. North of Europa is on the right. Image credit: NASA / JPL-Caltech / SETI Institute.
On Earth, tectonic activity is crucial for supporting diverse habitats that sustain life.
This interaction between water and rocks on the ocean floor can generate chemical energy essential for potential biological processes.
Thus, the existence of tectonic activity on a celestial body can indicate an environment conducive to supporting life.
Europa, one of Jupiter’s moons, is believed to harbor an immense underground ocean beneath its frosty exterior.
While earlier studies hinted at volcanic activity beneath Europa’s ocean floor, the potential for tectonic movement had not been thoroughly explored until now.
“If we could survey those oceans using remote-controlled submarines, we predict we wouldn’t observe any new cracks, active volcanoes, or hydrothermal vents on the ocean floor,” stated Dr. Paul Byrne, a researcher at Washington University in St. Louis.
“Geologically, nothing is changing there. Everything remains quiet.”
“In icy worlds like Europa, a tranquil ocean floor could suggest a lifeless ocean.”
Dr. Byrne and his team conducted comprehensive modeling to evaluate potential tectonic activity within Europa’s theorized subsurface ocean.
Their findings were compared against known behaviors on Earth’s ocean floor and Enceladus.
The researchers assessed stress from tidal forces, global contraction, mantle convection, and serpentinization— a geological process involving the interaction of rocks and water.
However, they concluded that these factors are unlikely to be driving tectonic activity, even along Europa’s existing fissures at present.
This discovery implies that water-rock interactions might be confined to the uppermost layers of the ocean floor, which limits the prospects for habitable conditions beneath Europa’s surface.
Future research aims to gather direct evidence regarding Europa’s geology and tectonics.
“Europa likely experiences tidal heating, which is why it hasn’t fully frozen,” Dr. Byrne noted.
“There may have been greater heating in its distant past.”
“However, currently, we do not observe eruptions from the ice as seen on Io. Our calculations indicate that the currents are simply not strong enough to foster significant geological activity on the ocean floor.”
For more details, refer to the results published in this week’s issue of Nature Communications.
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PK burn et al. 2026. There may be little or no active faults on Europa’s ocean floor today. Nat Commune 17, 4; doi: 10.1038/s41467-025-67151-3
As of February 2026, the world faces a historic moment: for the first time in decades, there will be no active treaty regulating the nuclear arsenals of the United States and Russia. While experts are divided over the effectiveness of the New START Treaty in enhancing global security, there’s a consensus that establishing a successor treaty is improbable.
The United States and Russia initiated their nuclear arms reduction efforts with the START I treaty in 1991, which evolved into the New START in 2011. In 2021, Presidents Joe Biden and Vladimir Putin agreed to extend the treaty by five years, but this agreement expired on February 5, 2026, and negotiations for a new treaty have stalled.
Tensions escalated significantly between the U.S. and Russia following the full-scale invasion of Ukraine in 2022. Shortly after, Russia was excluded from crucial weapons inspections, leading to U.S. retaliation. Currently, discussions are emerging about potential nuclear tests from both countries, though many see these as mere posturing devoid of real substance. The likelihood of a New START replacement treaty appears dimmer than ever.
Mark Bell, a professor at the University of Minnesota, argues that a new treaty limiting the U.S. arsenal to match that of Russia’s would be unattractive to the U.S. This is largely due to concerns over needing a robust deterrent against both Russia and the increasingly nuclear-capable China, which currently has 600 nuclear weapons. While this is significantly fewer than the 5,000 plus weapons possessed by the U.S. and Russia, China’s nuclear capabilities are rapidly growing. Russia is unlikely to accept any proposal that would limit its arsenal to numbers inferior to the U.S.’s, and China would resist agreements that restrict its future growth to parity with these powers. Negotiating a new treaty is fraught with complications from the outset, Bell asserts.
Historically, START I and New START are viewed as successful frameworks. Though not flawless, they have contributed to stability. However, Bell expresses skepticism regarding their true impact on global safety. He notes, “Could they have saved both superpowers some money? Perhaps. Did they provide a platform for cooperation? Certainly. But did they fundamentally alter the risk of war? I don’t think so.”
Regardless of treaty status, the threat of nuclear war persists, according to Bell. He suggests that the concept of mutually assured destruction serves as our current safeguard against nuclear conflict. “The fear of catastrophic consequences, rather than treaties, is what may deter warfare. This stabilizing factor stems from danger itself, which is an intrinsic aspect of nuclear deterrence,” he elaborates.
Conversely, some experts are more concerned about the implications of losing the treaty. Steven Herzog, a scholar at the Middlebury Institute of International Studies in Monterey, California, and former U.S. Department of Energy arms control specialist, remarked to New Scientist that the absence of New START heightens the risk of nuclear warfare.
“A lack of transparency makes global security fragile by spurring unchecked competition among leaders who might resort to nuclear capabilities,” Herzog warns. “In an environment where Russia’s unpredictability is escalating and the U.S. administration is equally volatile, it’s alarming that we lack essential measures for confidence-building and transparency that could temper an arms race.”
Although various treaties addressing nuclear weapons exist, the ambitious Treaty on the Prohibition of Nuclear Weapons seeks to eliminate nuclear arms completely yet lacks participation from many nuclear-armed nations. Furthermore, while several states have ratified the Treaty on the Non-Proliferation of Nuclear Weapons, it does little to curb the existing arsenal. New START remains the only treaty that held nuclear powers accountable.
Herzog believes that both Donald Trump and Vladimir Putin could potentially reach a similar agreement if they desired. Indeed, President Putin’s proposal for an unofficial one-year extension was positively received by President Trump. However, concrete negotiations are absent, and any such accord would likely serve as a temporary fix rather than a long-term solution.
Philip Bleek, a researcher at the Middlebury Institute of International Studies, expresses that while extending the treaty could be beneficial if it allowed time for negotiating a new agreement, the long-term prospects for arms control remain bleak. “A one-year extension may lead Russia to feel their financial stake is wasted, making them less likely to engage in future talks,” he explains.
Treaty negotiations are intricate battles involving political leaders, military strategists, and intelligence officials striving for even marginal strategic advantages. Herzog notes that Russia could be at an advantage since significant personnel, such as weapons inspectors and negotiators, have been dismissed or forced out by the Trump administration.
“If we are serious about negotiating a new treaty, we likely won’t have the staffing or resources available to do so,” Herzog concludes.
Many perceive time as a finite resource that is challenging to manage. As we progress through life, the feeling that time slips away faster becomes more pronounced. Fortunately, psychological studies indicate that with a few simple changes in your daily routine, you can enhance your experience of time, making it feel more plentiful.
New Scientist engaged with Ian Taylor, an author at Loughborough University, UK. His book, Time Hack: The Psychology of Time and How to Spend It, discusses how re-evaluating our relationship with time can alleviate pressure, diminish boredom, and foster a sense of fulfillment.
Helen Thomson: Typically, physicists focus on defining time, integrating it within the equations that explain the universe. What perspective do psychologists have on time?
Ian Taylor: Time’s definition is a topic of much debate. For instance, physicists question whether time is an emergent property or a fundamental one. My focus is on the subjective perception of time, seeing it as a connective framework linking our memories to our aspirations, contributing to a sense of consistency in our lives.
How does the brain construct our perception of time?
Our brains lack a singular center for biological clocks, yet multiple processes collaborate to monitor time’s passage, creating our time sense. This perception isn’t solely dictated by our brain; it involves an intricate interplay between mind, body, and emotions. Psychologically, this internal clock accelerates or decelerates based on our cognitive engagement and attentional focus.
Reflecting on a time when my brakes failed during a car crash, I remember vividly my instructor’s advice on braking, the anxiety of informing my mother about my damaged vehicle, and regretting the song playing in the background. Calculating which cars I might hit, I even attempted to alert the couple in front of me. It seemed to take forever, but this all transpired in under a second. It felt like slowing down time—what was happening?
Emotions and motivation profoundly influence our time perception. Studies indicate that feelings of anger or sadness can distort time perception, making it feel slower, while happiness accelerates that feeling of passage. Hence, the adage: “Time flies when you’re having fun.” Yet, emotions aren’t strictly positive or negative; intensity, or level of arousal, plays a role.
In general, heightened alertness leads to a perception of slower time. Both calm and excited states are positive, but their intensities differ significantly. In crises, such as your near-accident, heightened excitement may have slowed your perception of time, acting as a survival mechanism that enhances clarity in critical moments.
Researchers are exploring various explanations for time dilation. From a motivation perspective, which is my area of focus, potential insights are emerging.
We often perceive time as fleeting when pursuing goals or engaging in enjoyable activities (approach-oriented motivational states) but experience it slowing down when avoiding unpleasant tasks (avoidance-oriented motivational states). This aligns with your crash example, where survival instincts influenced your time perception.
Is it possible to consciously manipulate your time perception based on these ideas?
Indeed. Numerous lab studies support this. For instance, participants shown appealing images, such as enticing cakes, report that time flies compared to viewing something undesirable. Participants experiencing distressing images—like mutilated bodies—report that time appears to slow due to a strong desire to evade the situation.
Feeling like you’re not having fun can increase the perception that time is passing slowly.
Martin Parr/Magnum Photos
While laboratory findings may not entirely mirror real-life scenarios, if you wish to expedite time, particularly over the next two weeks, focus on achieving what you desire, similar to the cake study. Concentrate on pursuits you value and enjoy.
On the contrary, people frequently seek ways to slow down time, often feeling rushed or time-starved. How can one cultivate a richer experience of time?
Resorting to distressing images for the sake of slowing time is not advisable. The key lies not in forcefully enriching time but in how you effectively utilize the time you have, preventing it from overwhelming you. Although today’s agenda may be identical for everyone, the difference lies in the value and enjoyment embedded in activities. If you’re merely fulfilling obligations rather than pursuing joy, you may lose the sense of time passing, leading to feelings of scarcity.
Thus, the sensation of lacking time doesn’t correspond to actual hours available but relates more to how wisely you consume that time and the feelings attached to it. In a study, researchers discovered no correlation between people’s perceived need for exercise and how busy they were objectively.
You highlight the importance of fostering a positive relationship with time in your book. What additional strategies can help cultivate this relationship?
For me, a healthy relationship with time means concluding the day without fatigue, feeling productive, and self-satisfied.
This involves being aware of time’s impact on our motivation and health. Consider the concept of ego depletion, which emerged in the 1990s. Initially, researchers posited that exerting willpower (like performing well on an exam) depleted a finite resource. However, this concept has since been dispelled. Willpower diminishes over time, as reiterated in recent studies, but it can be reactivated. This understanding aids in time management; avoid willpower-reliant tasks at night and prioritize them for mornings, when your cognitive resources are sharper.
Insights into our motivation reveal that immediate rewards drive us more than delayed ones. Whether awarding instant monetary gains for work or giving immediate gratification in exercise and diet, short-term rewards enhance motivation. Thus, it’s imperative to reward yourself right away rather than waiting for distant outcomes.
Meaningful experiences, such as traveling with loved ones, can expand your perception of time.
Martin Parr/Magnum Photos
This principle arises from the understanding that motivation is often tied to outcomes rather than actions. Individuals are driven by results, so minimizing the gap between effort and reward can amplify motivation. Immediate gains associated with actions encourage persistence.
It’s essential to recognize that busy schedules don’t equate to feeling busy. While many believe they’ll achieve satisfaction by reducing their commitments, the truth is that enhancing well-being can lead to a reduced sensation of being overwhelmed. Cultivating enjoyable activities—even without modifying your schedule—can enrich your perception of time.
What should I make of ‘dead time’? Is it advisable to eliminate it?
It largely depends on how you process ‘dead time.’ In my book, I differentiate between dead time and loneliness. Many dread being alone in their thoughts, often indulging in negative reflections.
In a revealing study, participants opted for an electric shock over 15 minutes of solitary thought. Notably, 67% of men preferred the shock, compared to just 25% of women. During idle moments, many reach for smartphones, only to find that mindless scrolling leads to greater boredom, as evidence suggests.
However, if you can navigate through anxiety and negativity during solitude, it can be transformative and generate substantial personal growth. Historical studies on solitary confinement and polar explorations reveal that the right supportive environment during isolation can foster self-sufficiency and deeper understanding.
Moreover, solitude can enhance creativity, emotional health, and clarity. Embracing traffic delays or queue times can significantly boost your well-being if you choose to confront them instead of distracting yourself.
The San people of southern Africa utilize poison arrows for hunting, a practice rooted in ancient traditions.
imageBROKER.com / Alamy
Discoveries of plant poisons on 60,000-year-old arrowheads in South Africa suggest that ancient hunters harnessed toxic materials far earlier than previously believed.
Prior to this discovery, evidence for poisoned arrows extended back only about 8,000 years. However, a 2020 study of arrow tips dating from 50,000 to 80,000 years ago indicated they exemplified designs similar to modern poison arrows.
Led by Professor Marlies Lombard, researchers at the University of Johannesburg uncovered that the tips of 60,000-year-old arrowheads were coated in a sticky substance, though poison’s presence couldn’t initially be confirmed.
Recently, Professor Lombard and her team confirmed the presence of toxic alkaloids, such as bupandrin and epibufanisin, in five quartzite arrowheads retrieved from Umhlatuzana rock caves in KwaZulu-Natal province.
The scientists believe these toxins likely originated from milky exudates from the roots of the plant species Buffondistica, which could be applied directly to arrow tips or processed to create a potent resin.
“If we found this in just one artifact, it could have been a mere coincidence,” Lombard noted. “However, finding it in five out of ten artifacts strongly indicates it was systematically used 60,000 years ago.”
The same toxic sap is still employed by the San people today, suggesting an unbroken tradition lasting at least 60,000 years.
Toxic plant traces discovered on arrow points from the Umhlatuzana rock shelter
Marlies Lombard
The plant’s poison is lethal to rodents within 30 minutes and can induce nausea and coma in humans. For larger prey, the toxins likely slowed them down, allowing hunters to successfully track and kill them.
Professor Lombard speculates that the poison may have first been discovered when early humans ingested toxic bulbs, which could lead to illness or death. The plant also possesses antiseptic, antibacterial, and hallucinogenic qualities and is utilized in traditional medicine, though accidental overdoses still occur.
To verify their findings, researchers tested arrows collected by Carl Peter Thunberg, a Swedish naturalist who documented the use of poisoned arrows by indigenous hunters in the 1770s. These tests also revealed the presence of toxic alkaloids from the same plant species.
Sven Isaacson, a member of the research team at Stockholm University, noted that this discovery signifies an early example of sophisticated plant utilization. “While humans have utilized plants for nourishment and tools for millennia, this represents a distinct advancement — harnessing the biochemical attributes of plants to create drugs, medicines, and poisons.”
Newly discovered planets orbiting V1298 Tau are unusually lightweight, possessing a density comparable to polystyrene. This discovery may bridge critical gaps in our understanding of planetary system formation.
Unlike most planets in our Milky Way galaxy, which are often larger than Earth and smaller than Neptune, this solar system showcases an uncommon configuration. Astronomers have cataloged numerous planetary systems that formed billions of years ago, complicating our understanding of their genesis.
The research team, led by John Livingstone from the Astrobiology Center in Tokyo and Eric Pettigura from UCLA, has identified four dense planets that likely formed recently around a young star, V1298 Tau, which is around 20 million years old.
“We are examining younger models of the types of planetary systems commonly found across our galaxy,” Pettigura remarked.
Initially discovered in 2017, V1298 Tau and its accompanying planets remained largely unstudied until now. Over five years, researchers utilized both terrestrial and space telescopes to observe tiny variances in orbital durations, revealing intricate gravitational interactions among the four planets. These measurements enable more precise calculations of each planet’s radius and mass.
To effectively employ this observational method, researchers required initial estimates of each planet’s orbital duration without gravitational interference. Lacking that data for the outermost planet, they relied on educated conjectures, risking inaccuracies in their calculations.
“I initially had my doubts,” Petitgras admitted. “There were numerous potential pitfalls… When we first acquired data from the outermost planet, it felt as exhilarating as making a hole-in-one in golf.”
By accurately measuring the orbital durations and subsequently estimating the radii and masses, the team determined the densities of the planets. They discovered these are the lowest-density exoplanets known, with radii spanning five to ten times that of Earth, yet only a few times its mass.
“These planets exhibit a density akin to Styrofoam, which is remarkably low,” Pettigura explained.
This low density can be attributed to the planets’ ongoing gravitational contraction, potentially classifying them as super-Earths or sub-Neptunes—types of planets typically formed during the evolutionary stages.
The planets of V1298 Tau operate in a so-called orbital resonance, indicating their orbital periods are harmonically related. This observation aligns with astronomers’ theories on the formation of most planetary systems, including our own solar system, which initially have tightly packed configurations that eventually evolve into less stable arrangements, according to Sean Raymond from the University of Bordeaux in France.
“This newly identified system of close, low-mass planets revolving around a relatively young star could provide insights into typical sub-Neptunian systems,” Raymond pointed out. “This discovery is remarkable due to the inherent challenges in characterizing such youthful systems.”
Ancient Human Jawbone Discovered in Morocco’s Man Cave
Hamza Mehimdate, Casablanca Pre-History Program
Approximately 550,000-year-old fossils discovered in North Africa potentially belong to a shared ancestor of Neanderthals, Denisovans, and modern humans, existing right before these three significant hominin lineages diverged.
Neanderthals and Denisovans, the final common ancestors of modern humans, are believed to have thrived between 765,000 and 550,000 years ago. However, key questions about their existence and habitats still challenge our understanding of human evolution.
Recent fossil discoveries suggest that researchers, including Jean-Jacques Hublin from the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, are nearing the pivotal moment of divergence in ancient human lineages.
Hublin and his team examined various fossils, including two adult jawbones, one juvenile jawbone, and several vertebrae unearthed from a cave referred to as the Cave of Mankind near Casablanca, Morocco. One of the adult jawbones had been detailed in a 1969 study, while the remaining specimens are presented for the first time.
The fossilized molars share similarities with early Homo sapiens and Neanderthals, yet their jaw structures resemble ancient African Homo erectus.
Fortunately, these Moroccan hominids existed around the same period as changes in Earth’s magnetic field, recorded within the geological formations containing the fossils, allowing for precise dating to approximately 773,000 years ago.
Hublin described the find as filling a “significant gap” in the African human fossil record dating back to between one million and 600,000 years ago. Paleogenetic studies reveal that the ancestors of Neanderthals and Denisovans diverged around this time, while H. sapiens evolved independently in Africa.
The newly identified fossils are contemporaneous with a hominid population in Spain, previously hypothesized to serve as a common ancestor between Homo sapiens and Neanderthals.
Excavation Team at Moroccan Fossil Site
R. Gallotti, Casablanca Pre-History Program
Both Homo ancestors and Moroccan hominins exhibit “a mosaic of primitive and derived features,” Hublin notes, suggesting possible genetic exchanges across the Strait of Gibraltar. However, notable distinctions exist between the fossils from both areas, with Spanish specimens appearing more Neanderthal-like.
“The last common ancestor likely inhabited both sides of the Mediterranean during that era, indicating a deep African lineage for Homo sapiens opposed to the Eurasian origin theories proposed by some,” Hublin states.
Julian Lewis, a professor at Griffith University in Brisbane, Australia, expresses intrigue over the physical differences in early Pleistocene hominids closely related to our species.
“The key takeaway is that these differences have been developing for a substantial period,” Lewis concluded, alluding to the arrival of the Homo ancestor in Spain, indicating it may represent one of several species across North Africa that eventually crossed over to Europe.
Chris Stringer from the Natural History Museum in London has also contributed to this discussion. His research, including findings from human fossils in China published last year, suggests that the last common ancestor of Homo sapiens, Neanderthals, and Denisovans could date back over a million years.
“The specific continent for that common ancestor’s existence remains unknown,” Stringer remarked. “Yet even if it lived outside Africa, our analysis indicates that the evolution of Homo sapiens predominantly took place in Africa, suggesting a potential early migration back into Africa for continued evolution.”
These newly identified Moroccan fossils may even represent early specimens of Homo sapiens, though sufficient skeletal fragments are lacking for definitive classification.
Ongoing comparisons with previously studied fossils will help ascertain their evolutionary positioning.
Astronomers have made significant strides in understanding how the most prevalent type of planet in our galaxy, known as super-Earths, forms. A new study highlights that these planets begin life as “bloated” infants, rapidly shedding much of their thick atmospheres.
This groundbreaking research, published in Nature, observed four youthful exoplanets within the V1298 Tau system. Remarkably, their host star is merely 20 million years old—akin to a 5-month-old baby in cosmic terms.
Currently, these planets boast radii 5 to 10 times larger than Earth, but their masses only range from 5 to 15 times that of Earth, resulting in a density similar to that of Styrofoam.
This “bloated” state occurs as the young star’s heat and light cause the planet’s atmosphere to expand dramatically. Consequently, these planets are losing significant amounts of gas into space, eventually leading to a reduction in size to somewhere between that of Earth and Neptune.
Super-Earths and sub-Neptunes, as they are often called, have been detected around numerous other stars, establishing them as the most ubiquitous type of planet known today. However, they remain absent in our solar system.
Lacking nearby examples to study these intermediate worlds in detail has made them a “missing link” in our understanding of planetary formation and evolution.
“V1298 Tau is a crucial link between star- and planet-forming nebulae visible across the sky and the mature planetary systems we are currently discovering in abundance,” stated Dr. Eric Pettigura from the University of California, who was involved in the research.
Astronomers had speculated about this growth pattern for infant planets based on their sizes, but this marks the first instance of direct observation of the phenomenon.
“These planets have already experienced rapid changes, significantly losing their original atmospheres and cooling more swiftly than traditional models predict,” noted James Owen, a co-author from Imperial College London.
“Their evolution is ongoing. Over the next few billion years, they will continue to shed atmospheres and reduce in size, eventually forming a compact system of super-Earths and sub-Neptunes widely observed throughout the galaxy.”
A Stroke of Luck
As with many astronomical breakthroughs, this discovery resulted from both serendipity and diligent effort.
The researchers analyzed the planets by monitoring their transits—temporary declines in a star’s brightness when a planet moves in front of it. The depth of this dip indicates the planet’s radius, while the timing offers insights into its orbit.
Planets block only a small fraction of a star’s light, typically around 1%, making their detection a challenging endeavor. – Credit: ESA
While scientists were aware that these planets were on the larger side, part of the transits for the two outer planets was missed, leaving uncertainties about their orbits.
“We used computer models and educated guesses to narrow down hundreds of possibilities,” Pettigura explained.
Fortunately, their predictions proved accurate. Upon searching for the planets again using ground-based telescopes, they successfully located them on the first attempt.
“I was thrilled,” Pettigura remarked. “Given the uncertain timing, I anticipated needing at least six attempts. It felt like hitting a hole-in-one in golf.”
Once the orbits were confirmed, the team conducted a detailed analysis to determine the planets’ masses.
As planets move past each other, their gravitational forces subtly alter their orbits, affecting transit timings. The greater a planet’s mass, the stronger its gravitational pull. This enabled the researchers to differentiate timing variations to ascertain the planets’ masses.
“The unexpectedly large radii of these young planets led to the hypothesis of very low densities, which had not been previously measured,” stated Trevor David of the Flatiron Institute, who was a co-author on the first discovery of this system.
“By measuring the masses of these planets for the first time, we have provided crucial observational evidence that validates their ‘bulgy’ characteristics, establishing a significant benchmark for planetary evolution theory.”
The Importance of a Strong Intestinal Lining for Optimal Health
Shutterstock/3dMediSphere
As we age, the cells that line our intestines gradually lose their ability to regenerate, impacting our immune health. However, recent research has successfully reversed this decline in older mice using genetically modified immune cells.
This innovative approach, known as CAR T-cell therapy, is primarily used to target specific blood cancers. It entails collecting a patient’s T cells, reprogramming them in a laboratory to identify and eliminate cancerous cells, and then reintroducing them into the bloodstream. Emerging variations of this therapy show promise not only in combatting solid tumors but also in preventing arterial blockages and treating autoimmune diseases like lupus.
In a groundbreaking study, Cemil Beyaz and his team at Cold Spring Harbor Laboratory, New York, explored the application of this therapy for revitalizing the aging gut. They focused on targeting damaged cells, known as senescent cells, which accumulate over time, fail to proliferate, and secrete substances that exacerbate inflammation and promote further aging. The researchers aimed their intervention at a protein called uPAR, prevalent on aging cells.
“The decline in gut health we observe with aging is linked to diminished stem cell fitness responsible for renewing the intestinal lining every three to five days,” Beyaz states. “We posited that eliminating these ‘unfit’ senescent cells would enhance the regenerative ability and overall functionality of stem cells in older mice.”
To validate this hypothesis, the researchers engineered CAR T cells from older mice to specifically recognize and eliminate uPAR on senescent cells. Upon reintroducing these modified cells, the researchers noted a significant increase in both the activity and number of stem cells maintaining tissue function, reaching levels comparable to those observed in younger mice. The treated older mice also exhibited marked improvements in intestinal barrier integrity and reduced inflammation compared to a separate cohort that received CAR T-cell therapy targeting different mechanisms.
“By removing senescent cells, we not only inhibited the aging process but also witnessed a reversal, with tissues displaying characteristics similar to those of young mice,” said team member Corina Amor, also from Cold Spring Harbor Laboratory.
“This therapy could potentially reverse age-related declines in bowel function, decreasing vulnerability to diseases such as intestinal infections, compromised intestinal integrity, and even cancer,” explained Tuomas Tammera from Memorial Sloan Kettering Cancer Center, who was not part of the study. However, he emphasized that ensuring the treatment’s effectiveness and safety in humans remains crucial.
Onur Eskiokaku, a researcher at Cold Spring Harbor Laboratory, highlighted the importance of determining the optimal dosage before advancing to human trials. “While uPAR is abundant in aged, defective cells, it may also be present in healthy tissues under certain conditions,” he noted.
It’s important to remember that senescent cells aren’t all detrimental; they play roles in tumor suppression and wound healing. “We are investigating the implications of depleting uPAR expression in other tissues,” mentioned Jesse Poganic from Harvard Medical School.
Additionally, treating aging in otherwise healthy individuals is not commonplace. The complexity and expense associated with CAR-T therapy, coupled with ongoing safety concerns, suggest that widespread application for reversing aging effects is not imminent, according to Joanna Neves at the Center at King’s College London. “Safety standards for preventative treatments must be more stringent than those for oncology.”
Beyaz asserts that addressing the age-related decline in intestinal function has long posed a challenge, with no effective solutions currently available, especially when the intestinal barrier’s regenerative capability is compromised. This research marks a significant step forward, indicating that the removal of unfit cells can restore crucial functions.
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AI Tools for Women’s Health: Incomplete Answers
Oscar Wong/Getty Images
Current AI models frequently struggle to provide accurate diagnoses or advice for pressing women’s health inquiries.
Thirteen AI language models from OpenAI, Google, Anthropic, Mistral AI, and xAI were assessed with 345 medical questions spanning five fields, including emergency medicine, gynecology, and neurology. These questions were curated by 17 experts in women’s health, pharmacists, and clinicians from the US and Europe.
Expert reviewers analyzed the AI responses, cross-referencing failures against a medical expertise benchmark which includes 96 queries.
On average, 60% of the queries yielded inadequate responses based on expert evaluations. Notably, GPT-5 was the strongest performer, with a 47% failure rate, while Mistral 8B exhibited a significant 73% failure rate.
“I see more women using AI for health queries and decision support,” says Victoria-Elizabeth Gruber, a representative from Lumos AI, a firm focused on enhancing AI model assessments. She and her colleagues recognized the potential dangers of relying on technology that perpetuates existing gender imbalances in medical knowledge. “This inspired us to establish the first benchmark in this domain,” she explains.
Gruber expressed surprise over the high failure rates, stating, “We anticipated some disparities, but the variability among models was striking.”
This outcome is not unexpected, according to Kara Tannenbaum at the University of Montreal, Canada, as AI models are trained on historical data that may inherently contain biases. “It’s crucial for online health information sources and professional associations to enhance their web content with more detailed, evidence-based insights related to sex and gender to better inform AI,” she emphasizes.
Jonathan H. Chen from Stanford University notes that the claimed 60% failure rate may be misleading. “This figure is based on a limited expert-defined sample, which does not accurately represent regular inquiries from patients and doctors,” he asserts. “Some test scenarios are overly cautious and can lead to higher failure rates.” For instance, if a postpartum woman reports a headache, the model might fail if pre-eclampsia isn’t immediately suspected.
Gruber acknowledges such critiques, clarifying, “Our intent was not to label the model as broadly unsafe but to establish clear, clinically relevant evaluation criteria. We purposefully set strict benchmarks as minor omissions in the medical field can be significant in some cases.”
An OpenAI representative stated: “ChatGPT aims to support, not replace, healthcare services. We closely collaborate with clinicians globally to refine our models and continuously evaluate them to minimize harmful or misleading output. Our latest GPT-5.2 models are designed to consider critical user contexts, including gender. We take the accuracy of our outputs seriously, and while ChatGPT can offer valuable insights, we advise consulting qualified healthcare providers for treatment and care decisions.” Other companies involved in the study did not respond to requests for comments from New Scientist.
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Recent research shows that jellyfish share surprising similarities with humans, including a sleep pattern of approximately eight hours a day, complemented by short naps. Understanding the sleep behaviors of these marine creatures can shed light on the evolutionary significance of sleep.
“Interestingly, like humans, jellyfish spend about a third of their time sleeping,” states Lior Appelbaum from Bar-Ilan University in Israel.
In animals with brains, such as mammals, sleep is crucial for memory consolidation and the elimination of metabolic waste. However, it remains unclear why sleep evolved in jellyfish, which belong to the brainless cnidarian group and possess neurons arranged in simple networks.
Appelbaum and his team utilized high-resolution cameras to observe Cassiopeia Andromeda, an upside-down jellyfish, in a controlled aquarium environment. The jellyfish were subjected to cycles of light and darkness to replicate natural conditions.
During the simulated daytime, the jellyfish exhibited an average pulse rate of over 37 times per minute, demonstrating responsiveness to sudden stimuli. In contrast, their pulse rate decreased at night, and they became less reactive, indicating a sleep state. These pulsations are vital for nutrient distribution and oxygen supply within the jellyfish’s body, as explained by Appelbaum.
Overall, jellyfish typically sleep for about eight hours each night, interspersed with brief naps lasting one to two hours. Prior studies had confirmed nocturnal sleep in C. Andromeda, but the intricacies of their sleep cycles were previously unknown.
In another experiment, researchers simulated sleep disruption by pulsating water against the jellyfish, which led to even better sleep the following day. “It mirrors human behavior: when sleep-deprived at night, we tend to feel more fatigued during the day,” notes Appelbaum.
Crucially, further examination indicated that sleep in C. Andromeda is associated with reduced DNA damage. Sleep likely protects neurons from deterioration that might occur during wakefulness, as corroborated by the observation that exposing jellyfish to ultraviolet light—thereby increasing DNA damage—resulted in improved sleep patterns.
Future studies are required to determine whether similar sleep benefits apply to other jellyfish species or even mammals. The researchers also found comparable results with starlet sea anemones (Nematostella vectensis), marking a significant step in confirming sleep in these organisms, according to Appelbaum.
Ancient Humans Hunting Elephants—Evidence of Slaughtering Animals 1.8 Million Years Ago
Natural History Museum/Scientific Photography Library
Hunting an elephant is a formidable challenge, necessitating advanced tools and teamwork, offering an abundant source of protein.
A research team led by Manuel Dominguez-Rodrigo from Rice University in Texas suggests that ancient humans may have accomplished this feat approximately 1.78 million years ago in Tanzania’s Olduvai Gorge.
“Around 2 million years ago, our ancestors consistently consumed smaller game like gazelles and waterbucks but did not target larger prey,” says Dominguez-Rodrigo.
Later findings from Olduvai Gorge indicate a significant shift. This valley, abundant with both animal and human fossils formed over the past 2 million to 17,000 years, shows a marked increase in elephant and hippopotamus remains around 1.8 million years ago. However, establishing conclusive evidence of human involvement in hunting remains elusive.
In June 2022, Dominguez-Rodrigo and his team discovered what may be an ancient elephant slaughterhouse at Olduvai.
The site, dubbed the EAK site, revealed partial remains of an extinct elephant species, Elephas reki, surrounded by an array of stone tools that were much larger and sturdier than those utilized by hominins 2 million years ago. Dominguez-Rodrigo posits these tools were likely crafted by the ancient hominin Homo erectus.
“These include Pleistocene knives, known for their sharpness even today,” he notes, emphasizing their potential for butchering tasks.
Dominguez-Rodrigo and his colleagues believe these stone tools facilitated elephant slaughter. Some limb bones appear to have fractured shortly after the elephant’s demise, indicating the bones were still fresh or “green.” Unlike scavengers like hyenas that can strip meat, they can’t shatter the dense bone shafts of mature elephants.
“We discovered numerous bones in the field with fresh fractures, pointing to human use of hammer stones for processing,” he states. “These ‘green’ fractured bones are widespread in the 1.7-million-year-old landscape and bear distinct impact marks.”
However, there is a scarcity of cut marks on bones, which typically indicate butchering practices to extract meat.
It remains uncertain whether humans actively hunted the elephants or merely scavenged existing carcasses.
“What we can confirm is that they disassembled the bones—or portions of them—leaving behind tools and bones as evidence,” affirms Dominguez-Rodrigo.
He adds that the transition to hunting elephants wasn’t merely due to advancements in stone tools, but also hinted at an increase in social structure and cultural development among hominin groups.
However, Michael Pante, a researcher at Colorado State University, remains skeptical of the findings.
Pante contends that the evidence for human exploitation of this individual elephant is weak. The interpretation relies heavily on the proximity of stone tools and elephant remains, as well as the inferred fractures created by human attempts to access bone marrow.
Pante asserts that the earliest definitive evidence of hippo, giraffe, and elephant hunting in Olduvai dates back to around 80,000 years ago, as shown in the research of the 1.7-million-year-old HWK EE site.
“In contrast to the EAK site, the bones at HWK EE exhibit cut marks and are associated with thousands of other bones and artifacts within an archaeological context,” he explains.
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Struggling to recall numerous passwords? If you can remember them all, you either have too few or are using the same one across multiple sites. By 2026, this challenge could become obsolete.
Passwords present significant cybersecurity challenges; hackers trade stolen credentials daily. A Verizon analysis reveals that only 3% of passwords are complex enough to resist hacking attempts.
Fortunately, an innovative solution is emerging, making data security simpler. Instead of cumbersome passwords, biometric authentication—such as facial recognition or fingerprint scanning—is increasingly being used for seamless logins.
“Passwordless authentication is becoming universal, providing robust security against phishing and brute force attacks,” says Jake Moore, an expert at cybersecurity firm ESET.
If you currently access your banking apps with your fingerprint, you’re already utilizing this cutting-edge method. It generates two cryptographic “passkeys”: a public key sent to your service (like your bank) during account creation and a private key securely stored on your device.
To log in, your bank sends a one-time cryptographic challenge to your device instead of requesting a password. Your fingerprint unlocks a secure chip that uses your private key to sign the challenge, sending the signed response back to your bank for verification against the public key. Importantly, your biometric data remains on your device. “Passkeys offer security, ease of use, and unparalleled convenience,” adds Moore.
Major companies are actively pushing passkey adoption. Microsoft announced in May 2025 that new accounts created with them will default to passwordless. “While passwords have been prevalent for centuries, their reign could soon come to an end,” the company stated. More organizations are expected to follow suit within the next year. Moore anticipates that as additional platforms embrace passkeys, more users will turn to biometric solutions that frequently scan their faces.
Various sectors are embracing passkey technology. Online gaming platform Roblox is rapidly expanding its use of passkeys, as shown by a 856% increase in authenticating users, with the public sector also participating; the German Federal Employment Agency ranks among the leading organizations adopting passkeys.
“Decreasing dependence on passwords benefits every organization,” affirms Andrew Schikier from the FIDO Alliance, which advocates for passkey integration. This transition also alleviates user concerns: data reveals that organizations switching to passkeys see an 81% drop in IT helpdesk requests regarding login issues. Schikier predicts that over half of the top 1,000 websites will adopt passkeys by 2026.
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Introduction
Since the 5th century AD, the phrase “In the beginning” has sparked intrigue, originating from the writings of an Israeli priest known as “P.” This profound beginning resonates with our modern understanding of the cosmos. Here’s a glimpse into the universe’s birth:
Words falter when describing the universe’s origins, transcending mere physics and human experience. By retracing our steps, we assert that the universe emerged from a hot Big Bang approximately 13.8 billion years ago. The early universe, characterized by rapid expansion, underwent quantum fluctuations, which left enduring marks.
These fluctuations allowed some regions to expand more rapidly, forming hyperdensities of hot matter, while others lagged, resulting in varying densities. About 100 seconds post-Big Bang, baryonic matter took shape: hydrogen nuclei, helium nuclei, and free electrons. Alongside, dark matter emerged as its elusive counterpart.
Initially, the universe existed as a hot plasma—fluidic and dominated by intense radiation—expanding with Big Bang momentum, aided by dark energy. As expansion slowed over 9 billion years, dark energy escalated the expansion rate.
This early universe’s excess density was predominantly dark matter, with small baryonic matter contributions. Gravity pulled these together, while radiation acted as a binding force. The pressure from this radiation created acoustic vibrations or sound waves within the plasma.
Although these waves were not audible, they traveled faster than half the speed of light, with wavelengths spanning millions of light-years. This era signifies the genesis of our universe.
As the pressure waves from radiation expanded outward, they dragged negatively charged electrons and their heavier baryon counterparts. Dark matter, indifferent to radiation interactions, remained behind, resulting in a spherical wave of dense baryonic material expanding outward.
The propagation speed of these sound waves reflected the baryonic material and radiation’s density. Early waves had smaller amplitudes and higher frequencies, readily damped after minimal cycles, akin to ultrahigh-frequency sound waves.
As the universe continued its expansion and cooldown, roughly 380,000 years later, electrons merged with hydrogen and helium nuclei, giving rise to neutral atoms in a process known as recombination. This event, spanning about 100,000 years, produced cosmic background radiation—an elusive imprint awaiting discovery.
Map of Cosmic Microwave Background Radiation Exhibiting Density Fluctuations
Collaboration between ESA and Planck
The radiation pressure and sound speed decreased significantly, creating a frozen spherical shell of baryonic material, similar to debris washed ashore by a storm. The largest compressional wave left behind a concentrated sphere of visible matter, termed the sonic horizon, roughly 480 million light-years from the original overdensity.
Early compressional waves left minor imprints on the universe’s matter distribution, while later waves, generated right before recombination, exhibited greater amplitude and lower frequency, observable in today’s cosmic background radiation.
Consequently, regions of high density yield slightly warmer background radiation, while lower density areas produce cooler radiation. This frozen state incorporates traces of matter distribution just after the Big Bang, known as a “feature of the universe.”
The wavelength of these final sound waves closely relates to the curvature of space, while the Hubble constant integrates our understanding of the cosmos measured over 13 billion years.
Both quantum fluctuations and acoustic vibrations provide distinct signatures, akin to cosmic fingerprints. The first evidence emerged on April 23, 1992, revealing temperature variations in a cosmic background radiation map produced by the COBE satellite. George Smoot, the lead researcher, highlighted its monumental significance, describing it as a divine encounter for believers.
Observing distinct directions in the cosmos creates a triangle projecting into space, with the vertex angle referred to as the angular scale. A favorable horizon results in a higher probability of encountering a hot spot within the cosmic background approximately 480 million light-years from another hot spot, corresponding to an angular scale of around 1°.
This measurement surpasses the resolution of earlier instruments, with the WMAP and Planck satellite missions unveiling additional acoustic vibrations down to angular scales under 0.1°.
The origins of baryonic matter contributed to cosmic structures, with small overdensities serving as seeds for star and galaxy formation, while underdensities created voids within the universe’s large-scale structure, known as the cosmic web. Thus, the probability of finding galaxy chains roughly 480 million light-years from each other slightly increases.
By analyzing acoustic vibrations, astrophysicists have accurately assessed cosmological parameters, including baryonic matter density, dark matter, dark energy, and the Hubble constant among others. However, contentment is elusive, as the standard cosmological inflation model (Lambda CDM) reveals we only observe 4.9% of the universe, with dark matter comprising 26.1% and dark energy making up 69%.
The enigma remains: we have yet to uncover the true nature of dark matter and dark energy.
Jim Baggott’s upcoming book, Disharmony: A History of the Hubble Constant Problem, is scheduled for release in the US by Oxford University Press in January 2026.
Astronomers utilizing the NASA/ESA Hubble Space Telescope have verified the presence of a starless, hydrogen-rich object primarily composed of dark matter. These intriguing entities, referred to as reionization-limited HI clouds (RELHICs), are remnants of the early Universe. They pose challenges to traditional theories of galaxy formation and may indicate undiscovered populations of similar cosmic structures.
This image illustrates the location of RELHIC object Cloud-9. Image credits: NASA / ESA / VLA / Gagandeep Anand, STScI / Alejandro Benitez-Llambay, University of Milan-Bicocca / Joseph DePasquale, STScI.
The RELHIC object, known as Cloud-9, was detected using the 500-meter Aperture Spherical Telescope (FAST) and its existence was independently verified by the Very Large Array (VLA) and the Green Bank Telescope (GBT).
“This is the narrative of a failed galaxy,” states astronomer Alejandro Benítez Lambay from the University of Milano-Bicocca.
“Scientific advancements often arise from failures rather than successes. In this case, the absence of stars confirms our theoretical framework,” he adds.
“This discovery reveals primordial components of galaxies yet to form within our local universe.”
The core of Cloud-9 consists of neutral hydrogen and spans approximately 4,900 light-years in diameter.
This object is positioned in proximity to the spiral galaxy Messier 94, shares its recession velocity, and is approximately 14.3 million light-years away from Earth.
“Cloud-9 represents a crucial glimpse into the enigmatic dark universe,” remarked Dr. Andrew Fox, an astronomer at ESA’s Association of Universities for Astronomical Research/Space Telescope Science Institute (AURA/STScI).
“Theoretical models suggest that a majority of the universe’s mass is composed of dark matter, which does not emit light, thus making it challenging to detect.”
“Cloud-9 offers a rare opportunity to study clouds dominated by dark matter.”
The findings discount the presence of dwarf galaxies with detectable stellar masses.
“The lack of observable stars reinforces the interpretation of this system as a RELHIC—a starless dark matter halo filled with hydrostatic gas in thermal equilibrium with the cosmic ultraviolet background,” stated the researchers.
Cloud-9 stands as a prime candidate for a compact HI cloud and offers robust empirical support for the ΛCDM (lambda cold dark matter) model, a leading cosmological framework.
This model predicts the existence of a starless dark matter halo filled with gas on subgalactic mass scales that have yet to form stars.
“The discovery of Cloud-9 also refines the current thresholds for halo mass required for galaxy formation, bringing us closer to understanding why some dark matter halos host galaxies while others remain barren,” concluded the researchers.
For detailed findings, look for the upcoming publication in the Astrophysics Journal Letter.
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Gagandeep S. Anand et al. 2025. The first RELHIC? Cloud-9 is a starless gas cloud. APJL 993, L55; doi: 10.3847/2041-8213/ae1584
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