The study, published in Nature Communications, provides the first randomized, placebo-controlled evidence in humans suggesting semaglutide may reduce the accumulation of DNA markers associated with biological aging, particularly in adults living with HIV. Researchers from the University of California San Diego and their collaborators analyzed data from a trial involving 108 adults with HIV-associated lipohypertrophy, a condition causing excess abdominal fat. About half received weekly semaglutide injections, while the other half got a placebo.

To assess aging, scientists used "epigenetic clocks," which estimate biological age by measuring DNA methylation—chemical tags that control gene activity. These markers can reveal if the body's cells are aging faster or slower than expected. People with HIV often experience accelerated biological aging, even with effective treatment, according to lead author Michael Corley, PhD. The semaglutide group showed slower biological aging markers compared to the placebo group.

Researchers believe semaglutide's potential anti-aging effects stem from multiple pathways. The drug reduces inflammation and improves metabolic health, which can lessen chronic immune activation, a key driver of accelerated aging in people with HIV. It also reduces harmful visceral and ectopic fat, potentially decreasing inflammatory signals that contribute to aging throughout the body. Corley suggests that GLP-1 drugs might even reprogram cells in various organs, explaining the observed effects across multiple aging clocks.

While this research focused on individuals with HIV, the findings could have broader implications. Corley noted that many biological processes studied in HIV are also central to aging in the general population. People with HIV can help identify interventions that might improve "healthspan"—the number of years lived in good health—for everyone. Another recent pilot study in npj Aging also found that semaglutide treatment was associated with slower biological aging in people with HIV and fatty liver disease.

Despite these promising results, the researchers caution that semaglutide is not an anti-aging drug. "We are not saying that semaglutide reverses aging or makes people younger," Corley stated. "What we are seeing is a signal that it may slow some of the biological processes associated with aging." Larger trials are needed to confirm these findings, determine the longevity of benefits, and identify optimal treatment plans. Future research may also explore combining these drugs with healthy lifestyle habits for potentially greater effects on biological aging.

This incredible feat was reached on the 1,890th Martian day, or sol, of the mission, marking a total of five years and four months of driving. This pace significantly outpaces NASA's previous long-distance champion, the Opportunity rover, which took a much longer 11 years and two months to travel the same distance.

A stunning image captured by the Mars Reconnaissance Orbiter's (MRO) HiRISE camera on June 13, 2026, showcases Perseverance as a minuscule green dot against the vast Martian terrain. The photo clearly displays the rover's winding tracks etched into the surface, a testament to its extensive exploration. At the time of the image, the rover was navigating an area west of Jezero Crater, a region the science team affectionately calls "Arbot."

Both the Perseverance rover and the Mars Reconnaissance Orbiter are managed by NASA's Jet Propulsion Laboratory (JPL) in Southern California, with support from Caltech. The MRO itself was constructed by Lockheed Martin Space in Denver, which also continues to assist with its ongoing operations. The University of Arizona in Tucson operates the HiRISE camera, a component built by BAE Systems in Boulder, Colorado.

For decades, the standard way to describe quantum states has involved complex numbers, which have both a real and an imaginary part. The real part usually handles amplitude, and the imaginary part handles phase. While this setup has been considered fundamental for describing quantum processes, physicists have long pondered if complex numbers are a core feature of nature or just a handy math trick.

This question naturally leads to another: Could quantum mechanics be rephrased using only real numbers? A 2021 study suggested complex numbers were essential under the usual rules of quantum mechanics, with experimental results backing that up.

However, researchers from Heinrich Heine University Düsseldorf (HHU) and the German Aerospace Center (DLR) decided to dig deeper. They re-examined the assumptions of that earlier work and, in a new study published in Physical Review Letters, found that one of the postulates used was actually more restrictive than it needed to be.

By swapping out that postulate for a physically motivated approach to combining quantum systems, they've identified a set of theories that can be described entirely with real numbers. Crucially, these real-number theories produce the exact same predictions for any experiment as the standard, complex-number version of quantum mechanics.

"This means that both frameworks yield identical predictions for any conceivable experiment," explained Professor Dagmar Bruß. "Within this framework, imaginary numbers are thus not fundamentally necessary in quantum mechanics and can in principle be replaced by alternative formulations using real numbers."

Researchers at Georgetown University found that extensive practice can shift complex tasks from the prefrontal cortex, which typically handles one demanding task at a time, to the temporal cortex. This region is more adept at recognizing patterns and processing information automatically.

The study involved participants sorting images for weeks, with brain scans showing a shift in activity from the prefrontal to the temporal cortex as they became proficient. This "offloading" of tasks from the prefrontal cortex not only frees it up for other activities but also allows for genuine multitasking, according to senior author Maximilian Riesenhuber.

These findings could shed light on habit formation, why changing ingrained behaviors is tough, and how to develop more sophisticated artificial intelligence capable of continuous learning by building on existing knowledge. It suggests that rather than juggling tasks, the brain can actually develop parallel processing capabilities.

The research implies that simply telling someone to "think of something else" isn't effective for breaking habits because these behaviors become ingrained in brain circuits less dependent on conscious control. Future AI systems might benefit from this understanding of flexible brain architecture to learn more effectively without forgetting previous skills.

A recent study published in the Journal of Orthoptera Research formally designates these mantises as Invasive Alien Species (IAS). Lead researcher Roberto Battiston noted that while the insects have been present for about ten years, climate change is accelerating their northward spread. Many people, charmed by their impressive size, don't realize the ecological problem they represent.

These invasive mantises are formidable predators, thriving in trees and shrubs and reproducing at an impressive rate. Each egg case can yield around 200 young, nearly double that of native European mantises, with fewer nymphs cannibalizing each other. This rapid growth impacts native wildlife significantly, as invasive males are often eaten when attempting to mate with females, and the mantises prey on native pollinators like honeybees, as well as protected vertebrates such as tree frogs and lizards.

Surprisingly, domestic cats are the primary vertebrate predators of these invasive mantises, accounting for 45% of predation events. However, cats also hunt native European mantises, which are already struggling due to competition from the newcomers. Urban and suburban areas, with their "insect hotels" and warmer "urban heat islands," provide ideal habitats, extending the mantises' survival and range.

To combat this spread, scientists are leveraging citizen science, collecting thousands of public reports. Researchers encourage the public to spot and remove egg cases during winter, cautioning people to consult experts first to avoid harming native species' eggs. The expansion of these Asian mantises underscores how human activity and climate change are altering ecosystems, making public awareness and targeted conservation vital for protecting Europe's unique biodiversity.

The concept of a Dyson sphere, first proposed by physicist Freeman Dyson in 1960, has evolved from a solid shell to a "swarm" of countless orbiting structures designed to capture a star's energy. While theoretical, the question remains: what would such a structure look like to astronomers? A recent study, soon to be published in Universe, dives into how these colossal constructions might appear through telescopes and identifies the star types most likely to host them.

Red dwarfs, the most common stars in our galaxy, are prime candidates. They burn fuel incredibly slowly, surviving for trillions of years, and their small size makes them more engineer-friendly. A Dyson swarm could orbit a red dwarf much closer than it would orbit our Sun, requiring less material. White dwarfs, the dense remnants of dead stars, are even more attractive. Their compact nature allows a swarm to orbit just a few million kilometers away, drastically reducing construction scale, and they provide a steady energy output for billions of years.

A Dyson sphere would drastically alter a star's appearance on the Hertzsprung-Russell (H-R) diagram, which plots stellar temperature against luminosity. Instead of emitting visible light, the megastructure would absorb most of the star's radiation and re-emit it as infrared heat. This would make the "star" appear much cooler, potentially as low as 50 Kelvin, a temperature range not occupied by any known natural stars. This unique infrared signature, combined with an absence of the dusty disks usually seen around stars, would be a major clue.

The study also points out that a solid Dyson sphere is likely impossible. Advanced civilizations would probably build a swarm of independent solar collectors. As these components orbit, they could create unusual, non-natural variations in brightness. The James Webb Space Telescope, with its advanced infrared capabilities, is perfectly suited to hunt for these hypothetical structures. While no alien megastructures have been confirmed yet, this research provides astronomers with new observational clues to distinguish potential alien technology from natural cosmic phenomena.

LHS 3844b, a planet slightly bigger than Earth located 48.5 light-years away, orbits a red dwarf star. Its tidally locked nature means one hemisphere is stuck in permanent daylight, while the other is plunged into eternal, frigid darkness. Initially, this seems like a recipe for un-livable conditions, with daytime temperatures soaring to 1,000-2,000 Kelvin and the night side reaching near absolute zero.

However, a study published in Nature Communications proposes that this extreme environment might not be a deal-breaker for life. Researchers found that tidal locking itself could help distribute heat, creating more moderate thermal zones. "Life might find a way," commented Daisuke Noto, a researcher involved in the study, highlighting that the planet's constant orientation might actually aid in sustaining life by managing heat flux.

The study also points out that tidally locked planets are far more common than planets like Earth with regular day-night cycles. Many celestial bodies close to their stars end up tidally locked, always presenting the same side, much like our moon does to Earth. The research team built a physical lab model, using glycerol and thermochromic liquid crystals in a tank, to simulate the interior of these planets and understand how heat moves within their rocky mantles.

Their experiments revealed a surprisingly stable pattern of heat distribution. Hot material consistently rose from beneath the day side, flowed to the cooler night side, and then sank, creating a continuous circulation loop. This steady, predictable internal "heartbeat" could potentially maintain localized geothermal environments, especially in the mid-latitudes, making some tidally locked exoplanets surprisingly hospitable.

Beyond surface temperatures, this internal circulation could even influence a planet's liquid core, potentially generating magnetic fields. While this aspect couldn't be tested in the current experiment, it opens exciting avenues for future research into the diverse conditions that could support life beyond our solar system.

The research, conducted using lab-grown retinal tissue, revealed the intricate cellular events that shape the foveola – the tiny, bullseye-like region in the retina responsible for our sharpest vision. "This is a key step toward understanding the inner workings of the center of the retina," explained lead researcher Robert J. Johnston Jr., an associate professor of biology at Johns Hopkins. "By better understanding this region and developing organoids that mimic its function, we hope to one day grow and transplant these tissues to restore vision."

The team focused on cone photoreceptors, the cells that enable our daytime and color vision. While the foveola constitutes a small part of the retina, it accounts for roughly half of our visual perception and, surprisingly, only contains red and green cones, unlike the rest of the retina which has all three types (blue, green, and red). For decades, how this specialized pattern emerged remained a puzzle, partly because common lab animals don't share the same photoreceptor arrangement.

The new findings suggest a surprising transformation happens early in fetal development. Between weeks 10 and 12, a few blue cones appear in the developing foveola. By week 14, these cells transform into red and green cones. Researchers discovered this switch occurs via two main actions: first, retinoic acid (derived from vitamin A) reduces the creation of new blue cones, and then thyroid hormones encourage the remaining blue cones to convert into red and green ones.

"The main model in the field from about 30 years ago was that somehow the few blue cones you get in that region just move out of the way," Johnston noted. "Our data supports a different model. These cells actually convert over time, which is really surprising."

These discoveries could significantly impact future vision restoration efforts. Johnston's team is refining their retinal organoids to better replicate human retinal function, aiming to produce healthier photoreceptor cells for therapies that could potentially treat conditions like macular degeneration, which currently has no cure. "The goal with using this organoid tech is to eventually make an almost made-to-order population of photoreceptors," said study co-author Hussey. "A big avenue of potential is cell replacement therapy to introduce healthy cells that can reintegrate into the eye and potentially restore that lost vision."

Previously, any sightings of live goblin sharks were accidental, occurring only after they were inadvertently caught by fishing gear and brought to the surface, where they rarely survived. The new research, published in the Journal of Fish Biology, details two healthy goblin sharks observed thriving in the wild. One was spotted near a seamount close to Jarvis Island, and the other was recorded along the Tonga Trench.

Often dubbed "living fossils," goblin sharks represent the last surviving members of a shark family dating back approximately 125 million years. These recent encounters not only expand our knowledge of the species' geographic distribution but also reveal they inhabit greater depths than previously known.

"Seeing the most iconic of all the deep-sea sharks alive and looking healthy in its natural habitat is a unique honor," stated Aaron Judah, the study's lead author and a doctoral candidate at UH Mānoa. "I was also very surprised about how deep this species was found. The observation from the slope of the Tonga Trench is nearly 700 meters deeper than this species was known to live."

These discoveries significantly broaden the known range of goblin sharks, which were previously documented only in limited areas off the western United States, Australia, and Japan, as well as parts of the Atlantic and Indian Oceans. The two new sightings in the Central Pacific are particularly impactful.

The first sighting emerged from archived footage from a 2019 expedition by the Ocean Exploration Trust. After reviewing recordings from the remotely operated vehicle Hercules, Judah confirmed a goblin shark had been captured on video near Jarvis Island. The second encounter occurred in 2024 during an expedition to the Tonga Trench, where a baited camera mounted on a lander captured footage of another goblin shark swimming freely.

These findings underscore the critical importance of traditional natural history research, especially in poorly understood deep-ocean environments. "New discoveries like this demonstrate that there is still so much to explore in our deep ocean home," Judah emphasized. "Given the newly-expanded geographic range of the goblin shark, this species can be included in regional management and a nation’s biodiversity list, whereas, beforehand we didn’t know it was even there!"

Researchers analyzed DNA from 132 individuals buried in a large megalithic tomb near Bury, north of Paris. The study, published in Nature Ecology & Evolution, revealed a clear genetic divide between people buried before and after a significant population crash. The earlier group, linked to Stone Age farming communities in northern France and Germany, was largely replaced by newcomers with genetic ties to southern France and the Iberian Peninsula.

"We see a clear genetic break between the two periods," explained Frederik Valeur Seersholm, a lead author from the University of Copenhagen. "The earlier group resembles Stone Age farming populations from northern France and Germany, while the later group shows strong genetic links to southern France and the Iberian Peninsula."

The investigation also uncovered traces of ancient diseases, including *Yersinia pestis* (plague) and *Borrelia recurrentis* (relapsing fever), in the ancient bones. However, scientists caution that disease alone likely didn't cause the collapse. "We can confirm that plague was present, but the evidence does not support it as the sole cause of the population collapse," stated Martin Sikora, a senior author. "The decline was likely driven by a combination of disease, environmental stress and other disruptive events." Evidence from the skeletons also points to unusually high mortality, especially among the young, indicating a severe societal crisis.

Beyond the population shift, the genetic data highlights significant social changes. Early burials featured multiple generations of extended families, suggesting close-knit communities. Later burials became more exclusive, dominated by a single male lineage, pointing to a different social structure. "This indicates that the population change was accompanied by a shift in how society was structured," Seersholm added.

These findings contribute to a growing picture of a Neolithic population decline across northern and western Europe. Crucially, the study suggests a direct link between the disappearance of these megalith-building populations and the cessation of monumental stone construction across the continent during the same era. "We now see that the end of these monumental constructions coincides with the disappearance of the population that built them," Seersholm concluded.

Traditionally, the way a material absorbs heat and emits it are linked, a concept known as reciprocity. This has made it challenging to manipulate thermal energy independently. The new device utilizes magneto-optical materials, which alter their light interaction under a magnetic field, allowing engineers to decouple these thermal processes. The team combined a magneto-optical material with a phase change material (GST) to create a device capable of directing heat radiation, switching this capability on or off, and crucially, retaining its state even without power.

"We made heat radiation behave in a 'smarter' way," explained Dr. Shunsuke Murai. "Achieving these capabilities in a working model could enable a new generation of efficient infrared emitters, thermal-energy devices, sensors, and photonic memory technologies."

This novel design significantly outperforms previous attempts. It demonstrates distinct responses to light from different directions, even at near-normal incidence, unlike older technologies that required steep angles and suffered reduced efficiency. The new material also offers reliable switching between states and maintains its configuration after power is removed, addressing key limitations of earlier systems.

Professor Koichi Okamoto highlighted the broader implications: "Our ultimate goal is to develop compact devices that can actively control heat radiation, much like electronic circuits control the flow of electricity. Such devices could be used in smarter infrared sensors, more efficient energy systems, and new types of photonic memory that store information using light and heat instead of electrical charges."

The featured object, known as NGC 6426, is a globular cluster located in the Milky Way's outer halo. These dense, spherical gatherings of stars, held together by gravity, are incredibly old. NGC 6426 is estimated to be around 13 billion years old, meaning it formed shortly after the universe itself began about 13.7 billion years ago, making it a crucial archive of the early cosmos.

The vibrant colors seen in the Hubble image aren't just for show; they represent different wavelengths of light captured by Hubble's filters. Blue hues indicate hotter, shorter wavelengths of light, while red signifies cooler, longer wavelengths. This color-temperature relationship helps astronomers study the characteristics of these ancient stars.

These stars exhibit low metallicity, meaning they contain very little of elements heavier than hydrogen and helium. This composition mirrors the conditions of the early universe, when heavier elements were just beginning to form. Scientists have also identified two distinct star populations within NGC 6426, suggesting a cycle of star birth, death through supernovae, and subsequent enrichment of the cluster with heavier elements for new stars to form.

This breathtaking image is part of an ongoing Hubble study focused on globular clusters in the Milky Way's halo. By analyzing their ages and chemical makeup, astronomers aim to unravel the complex story of our galaxy's formation and evolution. For over three decades, Hubble has revolutionized our cosmic perspective, and its discoveries are now being enhanced by the James Webb Space Telescope and the upcoming Nancy Grace Roman Space Telescope.

Researchers studied sea anemones, ancient marine animals that split from the evolutionary path leading to humans over 600 million years ago. These creatures are close relatives of corals and jellyfish, offering a unique look into early animal immunity.

The team found a protein named CARDIB, which initially looked a lot like MAVS, a crucial antiviral protein in humans that helps trigger immune responses. However, experiments revealed CARDIB actually suppresses antiviral defenses under normal conditions. "Everything about CARDIB suggested it should function like MAVS," said Prof. Yehu Moran, a lead researcher from the Hebrew University of Jerusalem. "Instead, we discovered that it does the exact opposite."

Curiosity about why an animal would suppress its own immune system led the researchers to use CRISPR gene editing to remove the CARDIB gene. Sea anemones without CARDIB became far more vulnerable to viruses, with infections spreading rapidly and their defense mechanisms failing. "Although CARDIB acts as a brake on the immune system under normal conditions, that brake turns out to be essential for mounting an effective antiviral response," explained Ton Sharoni, a PhD candidate on the project.

To confirm these findings, genetically modified sea anemones were placed in outdoor marine environments. Those lacking CARDIB accumulated significantly more viruses than their unmodified counterparts, showing that this newly found pathway is vital for dealing with real-world viral threats. "This demonstrated that the pathway we discovered is not simply a laboratory phenomenon," added Moran. "It plays a crucial role in helping these animals cope with the viral challenges they face in nature."

The research suggests that evolution didn't settle on just one antiviral strategy. Instead, different animal groups might have independently developed unique molecular systems to detect and combat viruses. This highlights the value of studying ancient organisms like sea anemones, as they can preserve evolutionary innovations that might be missed if scientists only focus on commonly studied species.

Alzheimer's is characterized by the accumulation of Tau protein, which damages and kills brain cells. As this protein moves to new brain regions, the disease progresses, leading to worsened memory loss and cognitive decline. A recent study in mice has revealed that a brain protein called Arc, usually involved in neuron communication, also appears to facilitate the spread of toxic Tau from diseased to healthy cells.

The findings suggest that future treatments might focus on preventing Tau from reaching healthy brain cells, rather than solely attempting to eliminate it. "I'm excited by the fact that we've identified a new way of potentially stopping the progression of Alzheimer's disease," stated Jason Shepherd, PhD, a professor of neurobiology at the University of Utah Health and senior author of the study, published in the journal Cell.

To understand how Alzheimer's spreads, scientists compared mice with and without the Arc protein. Their experiments showed Arc is crucial for transferring toxic Tau between neurons. Normally, Arc packages itself and important cellular signals into tiny sacs called extracellular vesicles (EVs) that travel between neurons. Toxic Tau appears to hijack this system, attaching to Arc within these vesicles to move from unhealthy to healthy neurons, where it can initiate further damage.

In Alzheimer's, Tau proteins clump into large tangles that disrupt a neuron's internal transport system, eventually leading to cell death. These tangles can break down into smaller "Tau seeds" that are then transferred to new neurons. Once inside a healthy neuron, these seeds corrupt healthy Tau, restarting the disease process. The researchers observed EVs containing both Arc and "sticky" Tau in mouse brain tissue, which were capable of infecting healthy cells and triggering new tangle formation. Removing Arc drastically reduced Tau transfer and disease spread.

Interestingly, Arc also plays a protective role in the early stages by helping neurons expel excess Tau, allowing damaged cells to survive longer. Without Arc, Tau gets trapped, causing cells to die more rapidly. This suggests that blocking EVs from entering healthy neurons, rather than just preventing Tau release, might be a more effective treatment approach.

The study also found EVs containing Arc and Tau in human brain tissue, indicating this mechanism could be present in people. However, researchers emphasize that extensive further research is necessary before any therapies can be developed. "We have some clues that whatever is happening in these mice could also be happening in humans, but we don't know that yet," Shepherd noted. Targeting these specific Tau-containing EVs could offer a way to slow or prevent further cognitive decline and brain damage in individuals with Alzheimer's.

Soil salinity is a growing threat to global food production, exacerbated by climate change, irrigation, and rising sea levels. This salt accumulation stunts plant growth, damages roots, and drastically cuts crop yields. Professor Jonathan Todd from the University of East Anglia (UEA) highlighted the urgency, stating, "The build-up of salt in farmland is a major and worsening problem... Salt chokes plant growth, damages roots and severely impact entire harvests -- putting global food supplies at risk."

The study revealed that plants naturally recruit beneficial bacteria, known as the root microbiome, when exposed to salt stress. Specifically, a group of bacteria called pseudomonads consistently gathered around the roots of various crops in saline soil. These pseudomonads possess specialized genes that allow them to tolerate high salt levels, making them well-suited for these harsh environments.

Introducing these pseudomonad strains to soybean plants in both greenhouse and field trials led to remarkable improvements. Plants treated with the microbes developed stronger root systems, showed better overall development, and produced higher yields compared to untreated plants in salty soils. Professor Todd noted, "We found that plants treated with the microbes showed stronger root systems, better development and higher yields compared to untreated plants grown in salty soils."

Surprisingly, the bacteria didn't help by reducing salt levels within the plants. Instead, they triggered a plant defense mechanism: increased production of lignin. Lignin is a strong, woody material that reinforces plant cell walls, acting as a natural structural support. The researchers found that increased lignin content significantly enhanced plants' ability to withstand salt stress, identifying this as the key protective effect.

This discovery opens exciting avenues for climate-resilient agriculture. By harnessing these naturally occurring microbes, bio-based treatments could be developed to help crops grow in saline soils without relying on heavy chemical inputs. Professor Todd expressed optimism, stating, "We hope this discovery opens up new possibilities for agriculture. With vast areas of farmland already affected by salinity and more under threat, microbial solutions could become an essential tool for maintaining crop yields and ensuring food security."

The newly confirmed planets, dubbed TOI-791 b and TOI-791 c, are located about 1,110 light-years away and orbit a star in the southern constellation Volans. While each planet boasts the size of Jupiter, their mass is astonishingly low. TOI-791 b has a density of a mere 0.038 grams per cubic centimeter, and TOI-791 c clocks in at 0.047 grams per cubic centimeter. For context, Jupiter is about 28 to 35 times denser than these cosmic siblings, and even cotton candy, typically around 0.05 grams per cubic centimeter, is denser.

Scientists believe these two planets formed together, essentially "siblings" from the same cosmic nursery. They also share a unique orbital rhythm: for every five laps the inner planet completes, the outer one finishes nearly three. Their gravitational tug-of-war creates subtle but detectable shifts in their transit timings. Finding multiple super-puff planets in a single system is incredibly rare, with only four other known examples, making TOI-791 a prime spot for understanding how these peculiar worlds come to be.

Remarkably, citizen scientists playing a role in the Planet Hunters TESS project first flagged these potential planets back in 2019 and 2023. Researchers then used data from telescopes worldwide to nail down their sizes and masses, revealing their ultra-low densities. The slight timing variations in the planets' transits across their star were key to estimating their mass.

The discovery benefited greatly from eight years of observations, including crucial data from the ASTEP telescope at Concordia Station in Antarctica. The extended winter darkness there provided uninterrupted views of the planets' unusually long transits, lasting over 11 hours – the longest continuous planetary transits ever fully observed from Earth.

The formation of super-puff planets remains a puzzle, but the leading theory suggests they possess massive hydrogen and helium atmospheres that constitute a large portion of their total mass. Future observations, including planned studies with the James Webb Space Telescope, aim to probe these atmospheres for clues about their origins and test different formation theories, offering a unique window into planetary system evolution.

The Einstein Probe's Wide-field X-ray Telescope (WXT) initially flagged a rapidly fluctuating X-ray source, designated EP250702a. This unusual signal stood out from typical cosmic X-ray sources due to its dramatic brightness changes. Coincidentally, NASA's Fermi Gamma-ray Space Telescope also detected gamma-ray bursts from the same cosmic neighborhood around the same time.

Further analysis of earlier WXT data revealed an even stranger sequence: steady X-ray emissions from the location roughly a day before the gamma-ray bursts, a pattern not usually associated with massive cosmic explosions. This pre-cursor signal, followed by intense X-ray flares peaking at an extraordinary luminosity of 3 × 10^49 erg s-1, hinted at something far more unique than a standard gamma-ray burst.

Following the WXT's precise location data, telescopes worldwide aimed at the source, confirming its position on the outskirts of a distant galaxy. As the EP's Follow-up X-ray Telescope (FXT) monitored the event, its brightness plummeted by over 100,000 times in about 20 days, with a shift from high-energy to low-energy X-rays.

The event's characteristics—early X-ray signals, extreme brightness, rapid evolution, and location away from a galaxy's center—challenged existing models. After exploring various possibilities, researchers concluded that the most compelling explanation is an intermediate-mass black hole ripping into a white dwarf, a process previously unseen in direct observation. The findings were published as the cover story in Science Bulletin.

For millennia, Sardis has been a crossroads of civilizations, shifting hands between Greeks, Romans, Byzantines, and Ottomans. Since 1958, archaeologists from the Harvard Cornell Exploration of Ancient Sardis have returned year after year, fostering an institutional continuity that Benjamin Anderson, an associate professor of history of art and visual studies, highlights as crucial for accumulating a significant body of data. "Many of us know and have been mentored by colleagues of the previous generation of excavators," Anderson explained. "As a result, it's one of the few long-term archaeological projects in the region that has generated a critical mass of data."

This UNESCO designation celebrates not just the rich history of Sardis, once the capital of the Lydian kingdom credited with inventing coinage, but also the dedication of those who have unearthed its secrets. Annetta Alexandridis, an associate professor of the history of art and classics, notes that Sardis offers an unparalleled glimpse into history, from the Bronze Age to the present day, acting as a "place of cultural encounter between the East and West." The city's layers of history, though challenging to excavate due to their complex stratification, provide a continuous narrative that fascinates researchers.

The modern excavation project, a partnership between Harvard and Cornell that began in 1958, has been influential in shaping archaeological practices. Unlike earlier, more exploitative excavations that sometimes led to the questionable removal of artifacts, this project has focused on responsible documentation and restoration. Teams have reconstructed significant structures like a monumental bath-gymnasium complex and one of the ancient world's largest synagogues, setting precedents for similar work globally.

Today, the project continues to train the next generation of archaeologists, with a strong emphasis on Turkish institutions and local collaboration. Students gain hands-on experience, often working alongside skilled local laborers in trenches that can extend deep underground. Leyla Uğurer, a doctoral student who grew up near Sardis, exemplifies this local connection, having been inspired by the excavations as a child to pursue a career in archaeology. "As a local, I can say it is very important," she stated regarding the UNESCO recognition. "First of all, now it is known worldwide and because of UNESCO, there can maybe be more funding for the excavation, also people, more tourists and more research."

Despite the progress and recognition, Sardis faces ongoing threats from natural erosion, farming, and increasingly sophisticated looting operations. Researchers stress that the long-term commitment to excavation and preservation remains vital. "One season's work, you'll learn how to do the thing, but you're not necessarily going to find something that will be especially significant for the history of the site, until maybe 10 years later, you find something else a little bit further away, and the pieces start to add up," Anderson concluded, underscoring the enduring importance of continued exploration.

These neurons, located in a primitive part of the brainstem, appear to boost attention by sifting through incoming information and zeroing in on what's most important. "A hallmark of ADHD is that even faint distractors draw attention away -- and that's exactly what we see here when these neurons are silenced," explained senior author Shreesh Mysore, a neuroscientist. "But the very next day, when the neurons are turned back on, the same animal can ignore distractors again, even very strong ones." The findings, published in Nature Communications, could pave the way for more targeted treatments for attention-related disorders.

Humans and other animals are constantly bombarded with information, needing to prioritize crucial signals while tuning out the rest. This skill, known as selective spatial attention, allows us to follow conversations in loud environments or find friends in a crowd. Issues with this ability are often linked to conditions like autism and ADHD. For years, scientists believed the prefrontal cortex, a more recently evolved brain region prominent in primates, was the main driver of attention. However, this didn't explain how animals with less developed prefrontal cortices could still focus so effectively.

"If we really go back in evolution, for hundreds of millions of years, birds have had this ability, fish have had this ability. And they do not typically have a highly developed prefrontal cortex, so how does the brain solve this problem?" questioned lead author Ninad Kothari. "We were able to identify an evolutionarily old region in the brainstem which affords this ability."

The research team designed an attention task where mice had to focus on visual cues on a screen while ignoring distractions. The mice performed well until researchers temporarily deactivated the brainstem neurons. When this happened, the animals became significantly more distractible, not due to vision or movement issues, but because they lost the ability to weigh competing information and select the most relevant signal.

"The only thing impaired was their ability to take the competing pieces of information, compare them, and pay attention to the location with the most important information," Mysore stated. "This part of the brain is like an attentional selection engine. It helps solve the question: 'What is most important information I should pay attention to right now?'"

The researchers are now eager to explore how these neurons function across different vertebrate species and if they play a similar role in humans. "All the evidence to date suggests that these neurons exist in humans too," Mysore added. "But are they responsible for selective spatial attention in humans? An exciting hypothesis is that they play a crucial role." Future studies could investigate these neurons' activity in individuals with ADHD and autism, potentially leading to more precise therapies.

Using an innovative technique to detect burning in fossilized bones, researchers found repeated signs of fire well inside the cave. Crucially, these traces were located too far from the cave entrance to be attributed to natural wildfires, strongly indicating that early humans deliberately brought fire into the cave and maintained it.

This groundbreaking research builds upon previous findings at Wonderwerk Cave, which in 2012 revealed evidence of fire use around 1 million years ago, previously considered the oldest known example of intentional fire use globally. The latest analysis, published in PLOS One, extends this timeline to between 1.07 and 1.79 million years ago, solidifying Wonderwerk Cave's status as one of the oldest known sites associated with hominin fire use.

The study introduces a novel method for identifying burned bone by analyzing its light-emitting properties when exposed to specific light wavelengths. This luminescence technique, combined with chemical analysis, allows for high-confidence identification of burned animal bones. Researchers applied this non-destructive approach to hundreds of tiny fossil bones left by owls, which provided an independent record of past events within the cave.

The evidence points to fire being present approximately 30 meters inside the cave, in layers associated with early Acheulean artifacts, likely used by Homo erectus. The findings suggest these early humans were collecting fire from natural sources, like lightning strikes, rather than creating it themselves. Transporting fire into the cave and keeping it burning, even for a limited time, represents a major behavioral leap, enabling warmth, protection, and potentially early forms of cooking.

"These discoveries show that early humans were not simply passive observers of natural fires," explained Dr. Liora Kolska Horwitz, co-director of the Wonderwerk Cave project. "They were actively engaging with fire and incorporating it into their lives." This new technique promises to unlock further secrets about the origins and evolution of one of humanity's most transformative technologies.

Researchers from Australia and New Zealand unearthed remains from around 1 million years ago, including a previously unknown relative of the iconic kākāpō parrot. This is the first time such a large collection of ancient terrestrial vertebrate fossils from this period has been found in New Zealand. The cave preserved fossils from 12 bird species and four frog species, painting a rare picture of life centuries before humans arrived on the islands. The findings, published in Alcheringa: An Australasian Journal of Palaeontology, suggest New Zealand's wildlife was already facing massive changes long before human settlement, with volcanic eruptions and climate shifts repeatedly altering habitats.

Lead author Associate Professor Trevor Worthy of Flinders University noted that the fossils reveal a bird community vastly different from what exists today. "This is a newly recognized avifauna for New Zealand, one that was replaced by the one humans encountered a million years later," he stated. "This remarkable find suggests our ancient forests were once home to a diverse group of birds that did not survive the next million years." The study highlights that approximately 33-50% of species disappeared in the million years before humans reached Aotearoa New Zealand.

Co-author Dr. Paul Scofield, Senior Curator of Natural History at Canterbury Museum, explained that these extinctions were likely driven by natural environmental upheavals. "These extinctions were driven by relatively rapid climate shifts and cataclysmic volcanic eruptions," he said. The discovery fills a major gap in New Zealand's fossil record, providing insights into a 15-million-year period previously absent from scientific understanding. "This wasn't a missing chapter in New Zealand's ancient history, it was a missing volume," Dr. Scofield added.

Among the most exciting finds is a new parrot species, Strigops insulaborealis, an ancient relative of the kākāpō. While modern kākāpō are flightless, analysis of the fossilized bones suggests this ancestor may have retained the ability to fly, possibly due to weaker leg bones indicating less reliance on climbing. The cave also yielded fossils of an extinct takahē ancestor and an extinct pigeon species related to Australian bronzewings. "The shifting forest and shrubland habitats forced a reset of the bird populations," Dr. Scofield commented. "We believe this was a major driver for the evolutionary diversification of birds and other fauna in the North Island."

The fossils' age is precisely determined by two layers of volcanic ash found within the cave, dating to approximately 1.55 million and 1 million years ago. This geological "sandwich" offers clear age limits, with the younger ash layer indicating the site is the oldest known cave on New Zealand's North Island. Associate Professor Worthy emphasized the fossils' importance in understanding New Zealand's natural history, providing a crucial baseline that shifts focus from human impact to the long-term influence of natural forces on the islands' unique wildlife.

While most butterflies only live for a few weeks as adults, some Heliconius species can survive up to three times longer, with certain individuals reaching nearly a year. For example, Heliconius hewitsoni has been documented living for 348 days, a stark contrast to its close relative Dione juno, which only lives about 14 days. This significant difference suggests the Heliconius tribe has developed a unique strategy for extending lifespan, potentially offering new insights into how aging is slowed in nature.

Further research revealed that at least one species, Heliconius hecale, shows minimal to no physical decline as it ages. Using a grip strength test, scientists found that older H. hecale butterflies performed as well as younger ones, with no apparent signs of deterioration. In comparison, a shorter-lived relative, Dryas iulia, exhibited clear age-related physical decline, indicating that Heliconius butterflies may largely bypass the typical physical breakdown associated with aging.

Scientists have long been aware of the unusual longevity of Heliconius butterflies, with their rare ability to feed on pollen as adults being a leading theory. While pollen feeding appears to contribute, removing it from the diet of H. hecale did not eliminate its lifespan advantage, suggesting both nutritional factors and evolutionary adaptations play a role.

The study highlights that long-lived species offer crucial insights into the mechanisms of healthy aging. Heliconius butterflies, with their extended lifespans and apparent slower aging, present a promising natural experiment for researchers. Dr. Jessica Foley, the study's lead author, stated, "By comparing long-lived Heliconius butterflies with their short-lived relatives, we have a natural evolutionary experiment that can help reveal how lifespan is extended, making them a highly promising new model for research into the biology of aging and longevity."

This research, analyzing 17 tyrannosaur fossils across a wide age range, offers the most detailed look yet at how these magnificent beasts developed throughout their lives. Scientists typically estimate dinosaur ages by examining growth rings in fossilized bones, much like counting rings on a tree. However, this study utilized more advanced techniques, including specialized lighting to reveal subtle growth marks and sophisticated statistical models, providing a more accurate reconstruction.

The findings indicate that T. rex remained in a growth phase for about 15 years longer than previously believed. This extended growth period might have allowed younger T. rexes to occupy different ecological roles, potentially contributing to their dominance as apex carnivores at the end of the Cretaceous Period. The study also fuels the ongoing debate about whether some famous T. rex fossils, like those nicknamed "Jane" and "Petey," might actually belong to a different species, such as Nanotyrannus, due to their distinct growth patterns.

Furthermore, the researchers discovered previously overlooked growth markers within the bones using specific light polarization methods. This new insight could revolutionize how scientists study dinosaur growth across various species, potentially leading to revised protocols for fossil analysis. It seems the King of the Dinosaurs still has plenty of secrets to reveal.

This phenomenon, known as "freshwater browning," is becoming widespread across northeastern North America and northern Europe. It's driven by a mix of factors, including climate change, which leads to higher temperatures and increased runoff, washing more carbon compounds from land into water. Additionally, efforts to reduce acidic emissions have inadvertently changed soil chemistry, further boosting the flow of carbon into lakes and rivers. This dissolved organic matter, essentially plant material, stains the water a distinct brown hue, much like steeping tea.

The murky conditions pose challenges for many fish. Reduced underwater visibility makes it harder for them to hunt prey, evade predators, and find suitable habitats. A comprehensive study, combining existing research with new analyses, found that fish in browner waters tend to grow more slowly. This slower growth can lead to smaller population sizes, ultimately shifting the balance of species within a lake.

However, not all fish are equally affected. Species with larger eyes appear to fare better in darker conditions, as vision remains crucial for navigation. The study observed that lakes with darker water had higher populations of fish with bigger eyes. Specifically, data from hundreds of lakes across North America and Europe showed a decrease in populations of lake trout, yellow perch, and largemouth and smallmouth bass. Interestingly, brook trout populations were unaffected.

On the flip side, northern pike and walleye populations are increasing. This is likely due to their specialized adaptations. Walleye possess retinas that enhance their vision in low-light, murky environments, while pike rely heavily on their advanced lateral-line sensory system, which detects vibrations and movement in the water, compensating for poor visibility.

For anglers, these changes offer a new strategy. Instead of relying on flashy or colorful lures that appeal to sight, fishermen in browner lakes might find more success with lures that create vibrations or carry scents, tapping into the senses that pike and walleye depend on. Understanding freshwater browning helps both scientists and fishing enthusiasts grasp the evolving dynamics of aquatic ecosystems.

As neurons migrate through the developing brain, they're forced to squeeze through tight spots. Researchers from Kyoto University and collaborating institutions discovered this journey causes significant DNA damage, specifically double-strand breaks. While this type of damage is usually bad news for cells, it turns out to be a normal and vital part of building the cerebral cortex in healthy brains. The key is that neurons can rapidly repair this damage before it causes any lasting issues.

"The developing brain seems to have evolved to tolerate and repair neuronal damage efficiently," explained lead researcher Professor Mineko Kengaku. "Understanding the limits of that tolerance, and what happens when repair isn't perfect, gets us closer to understanding various neurological conditions."

To get a handle on how this damage happens, the team mimicked the tight spaces neurons encounter using microchannels. They watched as double-strand breaks appeared as neurons moved through. Most of these breaks were fixed within 24 hours, allowing the neurons to keep functioning normally. The culprit behind the breaks? An enzyme called Topoisomerase IIβ, which normally helps manage DNA stress by temporarily cutting and rejoining strands. However, under mechanical stress from squeezing through tight spaces, this enzyme can get stuck, leaving DNA broken.

Interestingly, this DNA damage differs from that seen in cancer cells. While cancer cell damage can be random and disruptive, neuronal breaks were found in less critical genome regions, sparing essential genes and allowing the cells to maintain function. The study also explored what happens when repair fails, using mice engineered to lack a crucial repair enzyme. These mice showed no early problems, but as adults, they developed mild balance issues, mirroring symptoms in some human disorders linked to genome instability.

These findings suggest DNA breakage and repair play a bigger role in brain biology than previously thought. Researchers are now keen to explore if these early DNA changes contribute to individual neuron differences and impact neurodevelopmental or neurodegenerative diseases. "It changes how we view the neuronal genome," Professor Kengaku added. "While all neurons start with the same DNA, this mechanical journey and subsequent repair can write small genetic variations into the genome itself."

Tumor suppressor genes are usually our allies, working to fix DNA and prevent mutations. But new research from Penn State College of Medicine reveals that too much of the EXO1 DNA repair protein can be detrimental. Instead of repairing DNA, excessive EXO1 can break it down, leading to genome instability, a hallmark of cancer.

This overactivity of EXO1 is found in 20% to 30% of breast and ovarian cancers, as well as melanoma, testicular, cervical, and liver cancers. Intriguingly, cancer cells with high EXO1 levels behave similarly to those with BRCA mutations, which are known to increase hereditary cancer risk, even when no BRCA mutation is present.

The study, published in Nature Communications, suggests that EXO1 could act as a biomarker to identify patients who might benefit from specific chemotherapy treatments. "The same drugs that are reserved for treating BRCA-mutant tumors... could potentially be used to treat EXO1 overexpressing tumors," explained senior author George-Lucian Moldovan. This could expand the use of targeted therapies and potentially reduce side effects.

Laboratory experiments showed that when EXO1 production surged, its DNA-cutting function went haywire, damaging structures that should remain intact. This excess activity leads to DNA lesions and breaks, ultimately making cancer cells more vulnerable to chemotherapy, according to lead author Alexandra Nusawardhana.

The research also found that EXO1-overexpressing tumors responded strongly to olaparib, a drug used for BRCA-mutant cancers, and cisplatin, a common chemotherapy agent. This suggests that patients with elevated EXO1 could benefit from these treatments, possibly even at lower doses of cisplatin to minimize side effects. The team plans to continue their research with the ultimate goal of initiating clinical trials.

The cosmological constant is the mysterious energy driving the universe's accelerating expansion, and it's at the center of a huge clash between two major physics theories. Quantum field theory predicts that empty space should be brimming with energy, making the cosmological constant astronomically huge. But, surprise surprise, observations show it's incredibly small.

Researchers at Brown University have proposed a potential fix, drawing a surprising link between quantum gravity and the quantum Hall effect – a phenomenon in condensed matter physics where electrical conductance takes on super-precise values, even with material flaws.

They found that the math for a simple quantum gravity approach looks a lot like the math describing the quantum Hall effect. This stability in the Hall effect comes from topology, which deals with a system's fundamental "shape." The team argues that a similar topological feature in space-time could be keeping the cosmological constant stable and preventing it from exploding to the massive levels quantum physics expects.

"What we've shown is that if space-time has this non-trivial topology, then it resolves one of the deadliest problems of the cosmological constant," explained co-author Stephon Alexander. "All the quantum perturbations that should blow up the value of the cosmological constant are rendered inert by this topology, which keeps the constant's value stable."

This idea revisits Einstein's initial concept of the cosmological constant, which he later famously called his "biggest blunder." While he introduced it to counteract gravity in a static universe, its importance surged again after astronomers discovered the universe's expansion is speeding up. However, this revival highlighted the massive discrepancy between theoretical predictions and actual observations, a puzzle that has baffled scientists for decades.

The findings, published in Environmental Research Letters by NAU professor Kevin Gurney, raise concerns about the reliability of emissions data used for climate policy. Gurney's research team compared Climate TRACE's estimates for cars and trucks in 260 U.S. cities with their own independent database, Vulcan. The Vulcan system is built using official traffic and energy consumption data, providing a solid benchmark.

The comparison revealed a stark difference: Climate TRACE's CO2 emissions figures were, on average, 70% lower than those in the Vulcan database. In some cities, like Indianapolis and Nashville, the underestimation was over 90%. Researchers believe these discrepancies could extend beyond the U.S. and impact global climate data.

While acknowledging the potential of artificial intelligence in emissions tracking, the study emphasizes the need for rigorous scientific standards, transparency, and expert review. Accurate emissions data is crucial for developing effective climate policies and tracking progress toward reduction goals. Gurney stressed the importance of unbiased, scientifically sound data to avoid misleading decision-makers and maintain public trust.

Kevin Gurney has dedicated over two decades to developing standardized methods for measuring greenhouse gas emissions. His previous projects, Vulcan and Hestia, quantify emissions nationwide and have shown strong agreement with direct atmospheric monitoring. His extensive work has contributed to numerous scientific papers and policy-related reports, including those for the UN and the IPCC.

The study, published in Nature Communications, details a novel two-step treatment that successfully stimulated the regeneration of bone, joint structures, and ligaments in mammals. While the regrown tissues weren't perfect copies of the originals, the researchers are optimistic that this approach could significantly reduce scarring and enhance tissue repair following amputations.

"Why some animals can regenerate and others, particularly humans, can't is a big question that has been asked since Aristotle," explained Dr. Ken Muneoka, a professor in the VMBS' Department of Veterinary Physiology & Pharmacology (VTPP). "I've spent my career trying to understand that." The team's research focused on redirecting the behavior of fibroblast cells, which typically form scar tissue during healing, towards a regenerative response similar to the blastema formation seen in salamanders.

The innovative treatment involves applying two growth factors sequentially. First, fibroblast growth factor 2 (FGF2) is applied after the initial wound has closed, encouraging the formation of a blastema-like structure. Several days later, bone morphogenetic protein 2 (BMP2) is introduced, signaling these cells to begin building new tissues. "It's as if these cells can move in two different directions," Muneoka said. "They could either make a scar or make a blastema. Our research focused on redirecting the behavior of fibroblasts already present at the injury site."

Crucially, the study indicates that regeneration might not require external stem cells, challenging a common assumption in regenerative medicine. "You don't have to actually get stem cells and put them back in," Muneoka stated. "They're already there -- you just need to learn how to get them to behave the way you want." This suggests that the cells' potential is not absent but rather "obscured," according to Dr. Larry Suva, another VTPP professor involved in the study.

While the research is in its early phases, the findings hold promise for improving wound healing by reducing scar formation and enhancing tissue repair, even before full limb regeneration becomes a reality. The potential for clinical application is also bolstered by the fact that BMP2 is already FDA-approved for certain uses, and FGF2 is undergoing clinical trials. "This changes the way we think about what's possible," Suva concluded. "Once you show that regeneration can be activated, it opens the door to asking entirely new questions."

For years, the hunt for alien intelligence has focused on spotting super-narrow radio signals. The idea is that advanced alien tech would send out a concentrated beam, a clear sign of artificial origin, unlike the random noise from space. However, this new study points out a major flaw: by the time these signals reach us, they might have already been distorted and spread out by their home star's environment.

Think of it like this: even if aliens blast a perfectly focused radio signal, the plasma and energetic events swirling around their star can act like a cosmic funhouse mirror. These phenomena can widen the signal's frequency range, weakening the sharp peak that SETI searches are designed to detect. "If a signal gets broadened by its own star's environment, it can slip below our detection thresholds, even if it's there," explained Dr. Vishal Gajjar, the study's lead author and an astronomer at the SETI Institute.

To figure out just how much this "broadening" effect happens, the researchers used data from spacecraft within our own solar system. By observing how solar system probes' radio signals are affected by turbulent plasma, they were able to model how similar processes around other stars might mess with alien transmissions. This gives scientists a practical way to estimate signal distortion based on different star types and observing frequencies.

This finding could seriously shake up how we look for alien signals. The study highlights that M-dwarf stars, which are super common in our galaxy, are particularly good at spreading out narrowband signals. So, instead of hunting for those super-tight signals, future SETI efforts might need to be sensitive to wider, more spread-out signals. "By quantifying how stellar activity can reshape narrowband signals, we can design searches that are better matched to what actually arrives at Earth, not just what might be transmitted," said co-author Grayce C. Brown.

Inspired by the way office staples tangle together, scientists at CU Boulder's Paul M. Rady Department of Mechanical Engineering are exploring how specially shaped particles can create materials with both impressive strength and remarkable reversibility. The goal is to engineer materials that are adaptable, strong, and easily recyclable.

Professor Francois Barthelat, who leads the Laboratory for Advanced Materials & Bioinspiration, explained that while the concept of building blocks and geometry has been explored for years, the focus on interlocking, entangled particles is recent. "We are excited about the combination of properties we can get out of these systems," he stated, highlighting the technology's broad potential.

The core of this innovation lies in "entanglement," a phenomenon where particles interweave and form connections, much like the fibers in a bird's nest or the components in bone. The key discovery by the CU Boulder team is that the shape of the particles dramatically influences their behavior. Unlike smooth sand grains that don't interlock, altering a particle's shape allows for significant control over its mechanical properties and how it connects with others.

Through computational simulations and real-world tests, the researchers found that a "two-legged" particle, mimicking the shape of a staple, achieved the highest degree of entanglement. This unique shape allows the material to exhibit both high tensile strength and toughness simultaneously, a challenging feat for conventional materials. The material's state can be controlled by vibration: gentle shakes encourage interlocking and strengthening, while stronger vibrations cause it to unravel.

This "strange" material, existing in a state somewhere between liquid and solid, opens exciting engineering avenues. Potential applications include more sustainable construction, where structures could be disassembled and reused instead of demolished, and in robotics, enabling small robots to entangle for tasks and then separate. Barthelat even drew a parallel to the shapeshifting T-1000 from Terminator 2, acknowledging the futuristic possibilities while noting the current challenges in scaling up production.

The team is now experimenting with even more complex particle designs, featuring additional "legs" similar to burrs that cling to clothing, aiming to achieve even stronger entanglement effects and unlock further material innovations.

Using a specially equipped drone and a technique called 'Fast Lock-On (FLO) Tracking,' neurobiologist Prof. Dr. Andrew Straw and his team monitored bees flying between their hive and a food source roughly 120 meters away. The FLO Tracking method involves attaching tiny reflective markers to each bee, which are then tracked in real-time by a computer system on the drone, allowing for high-resolution 3D flight path recording in natural environments.

The observations were striking: each bee maintained its own preferred route with remarkable consistency on both its journey out and its return. These findings suggest a level of "personality" in their navigation, as Straw noted, "You could almost say that each bee has its own personality."

Analyzing flight paths near Kaiserstuhl, Germany, the researchers identified that bees used features like hedges and a distinctive tree as crucial navigational aids. Flight path precision was highest near these prominent landmarks, while journeys over more uniform areas like a cornfield showed slightly more variation, indicating that visual cues are key to their accuracy.

Interestingly, these findings also offer a new perspective on the famous waggle dance, the method bees use to communicate food source locations. While the dance is known to have some directional inaccuracies, this research suggests it's not due to poor navigation skills for familiar routes. Instead, individual bees are highly precise navigators when returning to known destinations, potentially indicating that the communication method itself is where the imprecision lies, rather than the bees' internal GPS.

For ages, the idea has been that when a massive star runs out of fuel, its own gravity crushes it into a singularity, forming a black hole. But physicists have always graved with the mind-bending implications: how can so much mass be squeezed into an infinitely small point? And what truly happens at that extreme where our current laws of physics just break down?

Enter the gravastar concept. These theoretical objects are just as dense and massive as black holes, making them super hard to spot. The key difference? No singularity, no event horizon. Instead, beneath their outer shell, they're packed with dark energy, which creates an outward push that fights gravity and stops complete collapse.

Now, physicists Daniel Jampolski and Luciano Rezzolla have cracked a major puzzle: how could gravastars even form? Their new model, derived from Einstein's General Relativity, proposes that the star's collapse can actually kickstart a mini-universe right within the collapsing matter. This new universe, much like our own Big Bang, would be driven by dark energy, expanding and pushing outwards against gravity. This cosmic tug-of-war could halt the collapse before a black hole even gets a chance to form, resulting in a stable gravastar.

"The Big Bang of the emerging universe can unfold once the star has already collapsed almost to the point of becoming a black hole," explains Jampolski. He notes that the behavior of matter under such extreme pressure is still largely a mystery, opening the door for totally new physical phenomena.

Rezzolla emphasizes that exploring gravastars isn't about ditching black holes, which remain the most straightforward explanation for stellar collapse. "Looking for alternatives to black holes should not suggest a skepticism towards black holes... However, as scientists... it is essential to maintain an unbiased approach towards what we do not know and hence explore both the accepted wisdom and the more exotic interpretations." History, after all, shows that sometimes the wildest theories become the new reality.

This ancient croc lived between 3.4 and 3 million years ago in what is now Ethiopia, a period and region famously associated with Australopithecus afarensis, the species to which the iconic fossil Lucy belongs. Discovered in 1974, Lucy's skeleton was groundbreaking, providing crucial evidence that bipedalism evolved before larger brain sizes in human evolution.

Crocodylus lucivenator was no small fry. Measuring an impressive 12 to 15 feet long and weighing up to 1,300 pounds, it was the sole crocodile species in the Hadar landscape, a diverse environment of shrublands, wetlands, and waterways. Researchers believe it was an ambush predator, lying in wait in the water for unsuspecting animals, including early hominins, to approach for a drink.

"It was the largest predator in that ecosystem, more so than lions and hyenas, and the biggest threat to our ancestors who lived there during that time," explained Christopher Brochu, lead author of the study published in the Journal of Systematic Palaeontology. "It's a near certainty this crocodile would have hunted Lucy's species. Whether a particular crocodile tried to grab Lucy, we'll never know, but it would have seen Lucy's kind and thought, 'Dinner.'"

What set this crocodile apart was a distinctive hump on its snout, a feature more commonly seen in American crocodiles than in African Nile crocodiles, and possibly used for courtship displays. Its snout also extended farther beyond its nostrils, resembling the elongated snouts of modern crocodiles. Analysis of 121 fossil remains, including skulls and teeth from the Hadar Formation, allowed scientists to reconstruct this ancient predator.

One fossil even revealed evidence of a violent past, with partially healed injuries on its jaw suggesting a fight with another crocodile. "The fossil record preserves similar injuries in extinct groups as well, so this kind of face-biting behavior can be found throughout the crocodile family tree," noted Stephanie Drumheller, a co-author. "We can't know which combatant came out on top of that fight, but the healing tells us that, winner or loser, this animal survived the encounter."

This innovative technology, a collaborative effort between institutes in India, Singapore, and the S N Bose National Centre for Basic Sciences, tackles the energy-intensive nature of industrial separations, which account for up to half of global industrial energy use. Traditional methods like distillation are energy hogs, while existing membrane filters often suffer from inconsistent pore sizes and degradation.

Dubbed "POMbranes," these new membranes are inspired by nature, mimicking biological systems like aquaporins to regulate molecular flow with exceptional precision. The secret lies in polyoxometalate (POM) clusters, which form stable, permanently open pores exactly one nanometer wide – a significant leap from the unstable plastic filters of the past.

"These POMs are tiny, crown-shaped metal clusters that have a permanent, perfect hole in their centre that does not change or lose shape," explained Priyanka Dobariya, a lead researcher from CSMCRI. By linking these clusters with flexible chains, scientists created large, ultrathin films where molecules are forced through these nano-sized gateways, acting like a high-tech sieve.

Testing revealed that these POMbranes can differentiate molecules with incredibly fine distinctions, performing almost ten times better than current technologies. "Our membranes show almost ten times better separation performance compared to existing technologies, while remaining flexible, stable, and scalable," stated Dr. Ketan Patel of CSMCRI. Their flexibility, stability across various pH levels, and potential for large-scale production make them ideal for industrial adoption.

The implications are huge, particularly for industries like textiles and pharmaceuticals, which are major economic drivers. In textiles, the membranes could efficiently remove dye from wastewater, enabling significant water recycling and reducing chemical waste. For pharmaceuticals, they offer a way to improve drug purification and solvent recovery, cutting energy use while maintaining strict quality standards.

Described as a versatile "platform technology," POMbranes could transform a wide range of industrial separation tasks. This nature-inspired approach to molecular-level precision showcases how innovative design can provide scalable solutions to critical industrial challenges, paving the way for more sustainable manufacturing.

It turns out that tightly packed rice grains behave in a surprisingly counterintuitive way under pressure. When compressed slowly, they hold their ground and remain strong. However, when squeezed rapidly, they actually get weaker. This "rate softening" phenomenon, uncommon in most materials, occurs because friction between grains plummets under quick forces, weakening the internal load-bearing network.

Researchers, led by the University of Birmingham, have harnessed this unusual characteristic to engineer a new type of metamaterial. By combining rice-based granular units with materials like sand, which strengthen under rapid loading, they created a composite that can adapt its stiffness based on how quickly it's stressed.

"Rice might be best known as a staple food globally, but it's rarely associated with advanced engineering," explained Dr. Mingchao Liu from the University of Birmingham. "Our research shows that it can form the basis of a new class of functional materials. Rather than treating this phenomenon as a curiosity, we turned it into a design principle." This approach allows the material to bend, buckle, or stiffen differently in response to slow movements versus sudden impacts, all without needing any electronics or sensors.

The implications for soft robotics are huge. Imagine lighter, safer robots that can automatically adjust their flexibility for delicate tasks or work safely alongside humans. This speed-sensitive material could also enhance protective equipment, absorbing impact energy more effectively during collisions and potentially reducing injuries.

This breakthrough highlights how common materials can be re-imagined as intelligent systems, responding to their environment purely through their own mechanical properties, proving that innovation can often be found in the most unexpected places.

For decades, pinpointing the exact steps from inert chemicals to the first living systems has been a massive scientific puzzle. While various theories have emerged, focusing on everything from RNA to metabolism, none has fully explained the transition from non-life to life. The challenge lies in the fact that the precise sequence of events is impossible to witness directly and incredibly difficult to replicate.

The proposed nanozymes hypothesis, spearheaded by Professor Yongdong Jin at Shenzhen University, posits that primitive natural mineral nanozymes (MN-zymes) and their later organic hybrids were central players. These nano-materials, according to the theory, could have catalyzed the creation of the first biologically significant molecules from basic inorganic substances. Think of it as "inorganic photosynthesis," where these nano-architects harnessed natural energy sources like light and heat to drive complex chemical reactions.

The hypothesis outlines several key functions for these natural MN-zymes, including catalysis, surface binding, UV protection, selection, and energy management. By performing these roles, they could have guided early chemical reactions, converting energy into molecular information that could be read, written, and duplicated – essential steps for life's emergence. This view frames Earth itself as a massive, long-running natural laboratory, gradually building complexity from an inorganic foundation.

Interestingly, the theory highlights the potential significance of gold nanoparticles (AuNPs), suggesting an "Au world" where these particles, protected by organic coatings, acted as potent MN-zymes. The hypothesis also identifies four critical conditions for the natural selection and stabilization of life's precursor molecules: an inorganic energy source, the ability to form primitive MN-zymes, mechanisms for creating and stabilizing complex organic molecules, and the means to store and duplicate molecular information. The nanozymes hypothesis aims to bridge existing gaps between different origin-of-life theories and spark fresh research into the role of nanozymes in life's incredible beginning.

The newly detailed connectome expands upon previous fruit fly brain maps by incorporating the fly's nerve cord, essentially its spinal cord equivalent. This complete picture allows scientists to investigate how sensory input is processed and translated into actions like walking and flying. "We can see all of the neurons and their connections as a complete unit for the first time and ask, 'What do we learn from that?'" explained co-senior author Rachel Wilson of Harvard Medical School (HMS).

A key finding from studying the connectome is that many fruit fly behaviors appear to be managed by local neural circuits within specific body parts, rather than being dictated by a single command center in the brain. This challenges the long-held notion of a highly centralized control system. The complete connectome is now publicly accessible online, providing a powerful new resource for neuroscientists worldwide.

Fruit flies are a vital model in neuroscience due to their relatively simple nervous systems (about 160,000 neurons) that still support complex behaviors such as navigation and learning. The researchers meticulously mapped the connections by slicing a fruit fly into ultra-thin sections, using electron microscopy to capture millions of images, and employing AI to assemble a 3D map. This process effectively "embodies" the connectome by linking central nervous system neurons to those in appendages and sensory organs.

The research has already yielded insights into motor control. Instead of a top-down brain command, the study reveals that leg movements, for example, are primarily controlled by local neural circuits dedicated to that leg, which then coordinate with other leg circuits. Similar patterns were observed in circuits controlling wings and mouthparts, suggesting a highly distributed control system. "Our findings suggest that control for actions is highly distributed in local modules that link up and work together in different ways," stated co-first author Alexander Bates.

Looking ahead, this connectome is expected to fuel numerous future studies, akin to the impact of the Human Genome Project. Researchers plan to add more details, such as neuropeptide communication, and explore whether these distributed control principles apply to more complex organisms, including humans. The findings could also offer valuable biological data for advancing artificial intelligence and robotics.

Researchers discovered evidence suggesting that glucosamine could interfere with crucial brain processes already impacted by Alzheimer's. The findings, published in Nature Metabolism, analyzed extensive patient health records alongside advanced imaging of human brain tissue and mouse models.

While the study doesn't definitively prove glucosamine causes dementia and awaits clinical trial confirmation, it highlights the growing understanding of how metabolic issues contribute to neurodegenerative diseases. "Millions of people are taking an over-the-counter supplement that could potentially worsen their disease progression," stated senior author Ramon Sun, Ph.D.

The research team analyzed deidentified health records from 2012 to 2024, focusing on patients with Alzheimer's disease and related dementias (ADRD) or mild cognitive impairment (MCI). They found glucosamine use was associated with a 25% higher chance of MCI patients developing dementia and a 25% increased mortality risk in those already diagnosed with ADRD.

Further investigation pointed to an overactive protein and sugar-tagging pathway in Alzheimer's brains, potentially offering a new target for treatments. Experiments with mice showed that glucosamine worsened memory deficits and increased sugar molecule attachment to proteins, effects that improved when this sugar-tagging activity was chemically reduced.

Examination of human brain tissue revealed significantly higher levels of sugar attachment to proteins in Alzheimer's samples compared to healthy controls. "The Alzheimer's brain is adding too many of these sugar structures, and this seems to contribute to the disease rather than protect against it," explained co-author Matt Gentry, Ph.D.

The Amaterasu particle, detected in 2021, slammed into Earth with an energy level comparable to a fast-moving tennis ball, making it one of the most powerful cosmic events ever observed. Its origin has baffled scientists, especially since its trajectory points to a seemingly empty region of space, leaving no obvious cosmic accelerator behind.

Research led by Penn State, published in Physical Review Letters, proposes that atomic nuclei heavier than iron might be responsible. These ultraheavy nuclei could lose energy more slowly as they traverse vast intergalactic distances compared to lighter particles. This resilience allows them to retain their extreme energy levels by the time they reach Earth.

"Ultrahigh-energy cosmic rays can only be accelerated by some of the most powerful sources in the universe," explained Kohta Murase, a lead researcher on the project. "When we detect individual cosmic-ray particles such as the Amaterasu particle here on Earth, we can often use their energies, arrival directions and expected magnetic deflections to infer their possible cosmic sources."

Computer simulations conducted by the team indicate that these heavier nuclei are better equipped to survive the journey. This finding could redefine how scientists search for the origins of these extreme particles, pointing towards cosmic phenomena like colliding neutron stars or collapsing massive stars as likely sources.

Future observatories like AugerPrime and the Global Cosmic Ray Observatory could help verify these theories by searching for predicted signatures. The research team, including collaborators from Japan and Virginia Tech, believes that understanding these violent cosmic events is key to pinpointing where these ultrahigh-energy cosmic rays are born.

The idea of a massive, undiscovered planet beyond Neptune, dubbed Planet Nine, gained traction in 2016. Astronomers Konstantin Batygin and Mike Brown proposed it as the explanation for the peculiar orbits of many objects in the Kuiper Belt, a vast region filled with dwarf planets and other icy remnants. These objects, known as trans-Neptunian objects (TNOs), don't follow the predictable paths expected from the Sun's gravity alone, leading scientists to suspect the influence of a large, unseen gravitational force.

Evidence supporting Planet Nine has mounted over the years, with observations revealing increasingly erratic TNO orbits. Mike Brown himself stated in 2024, "I think it is very unlikely that P9 does not exist. There are currently no other explanations for the effects that we see." Examples like the dwarf planet candidate 2017 OF201, with its highly elliptical orbit, seemed to bolster the theory, suggesting gravitational tugs from a massive planet.

However, the lack of direct detection has fueled skepticism. Some argue that the existing orbital data from Kuiper Belt objects isn't sufficient to confirm Planet Nine's existence, and alternative explanations, like debris rings or even a small black hole, have been suggested. A major hurdle is the sheer vastness of the outer Solar System and the limited time astronomers have had to observe these distant objects' full orbital paths, which can span thousands of years.

The discovery of new TNOs, particularly "sednoids" like 2023 KQ14, has presented further challenges. These objects spend most of their time extremely far from the Sun, well beyond Neptune's gravitational influence. While 2023 KQ14 has an elliptical orbit, it appears more stable than predicted if a massive Planet Nine were actively influencing it. The discovery of multiple stable sednoid orbits suggests that if Planet Nine exists, it would have to be significantly farther out than previously estimated, potentially over 500 astronomical units (AU) from the Sun.

Despite these setbacks, the possibility of a massive planet shaping the outer Solar System remains. The limitations of current space travel mean direct exploration is not feasible in the near future, with a probe taking over a century to reach potential locations. For now, astronomers will continue to rely on increasingly sophisticated ground- and space-based telescopes to uncover the secrets hidden in the vast expanse of our Solar System.

Ever wonder how your brain decides when it's time to switch gears? Whether you're acing a job interview or navigating a curveball, adjusting your behavior is key. Now, a new study in Nature Communications from the Okinawa Institute of Science and Technology (OIST) reveals a fundamental brain mechanism driving this behavioral flexibility.

"The brain mechanisms behind changing behaviors have remained elusive, because adapting to a given scenario is very neurologically complex," explained co-author Professor Jeffery Wickens. "Previous work has indicated that brain cells releasing acetylcholine are involved, and we were able to use advanced imaging to see neurotransmitter release in real time."

Researchers trained mice to find a reward in a virtual maze. When the rules changed and the reward disappeared, the mice showed a significant spike in acetylcholine release in specific brain areas. This surge correlated with the mice adopting a "lose-shift" behavior, meaning they changed their maze strategy after the unexpected disappointment.

To confirm acetylcholine's role, scientists reduced the mice's ability to produce it. The result? The mice were far less likely to change their behavior, sticking to old patterns even when they no longer worked. This highlights acetylcholine's essential function in helping the brain adapt and make new choices.

The findings are significant for understanding conditions where breaking habits is tough, such as addiction, obsessive-compulsive disorder (OCD), and Parkinson's disease. "Understanding the mechanics of behavioral flexibility may one day help us develop better treatments," stated Professor Wickens, noting that acetylcholine levels are already implicated in treatments for various neuropsychiatric disorders.

Entanglement, where particles become interconnected in non-classical ways, is key to many future technologies. Traditionally, generating the sophisticated entangled states needed has been a complex endeavor. However, researchers at the University of Chicago Pritzker School of Molecular Engineering (UChicago PME) have proposed a minimalist strategy that could change that.

The team's breakthrough is based on cavity quantum electrodynamics (cavity QED), a setup involving particles within an optical cavity that traps light. The challenge in standard cavity QED systems is that particles interact with light identically, limiting the variety of quantum states achievable. "The challenge has always been that these systems have too much symmetry. All the atoms are talking to light in the same way," explained Aashish Clerk, a senior author of the study published in Physical Review X.

Their innovative solution involves subtly breaking this symmetry. By applying additional lasers or magnetic fields to shift the energy levels of different atom groups, while still using a common laser for driving them, the researchers can make atoms behave distinctively. Pairing atoms with specific energy offsets allows for controlled yet varied interactions. "By simply adjusting the lasers, we can access kinds of entangled states that no one had thought about before," said Anjun Chu, the study's first author.

This technique holds significant promise for quantum sensing, enabling devices that can detect minuscule field differences with enhanced robustness against noise. The method naturally rejects background interference, a major hurdle in current quantum sensor development. "You're able to do two things that are normally not compatible with one another: Use entanglement to build an exquisitely sensitive sensor but also have robustness to arbitrarily large amounts of noise," Clerk noted.

Beyond sensing, the platform can generate exotic quantum states, like the AKLT state, which are valuable for studying magnetic materials and could have applications in quantum computing. While still theoretical, the researchers are collaborating on experimental tests and exploring the full potential of their simple yet powerful quantum state generation method.

In a large-scale study, scientists successfully generated these spinning columns of flame, which draw in significant amounts of oxygen to create hotter, more efficient fires. This technique burns oil much faster than traditional methods while drastically reducing pollution and residue.

Led by experts from Texas A&M University and the University of California, Berkeley, the research demonstrated that fire whirls could burn crude oil nearly twice as fast as conventional in-situ burns. This accelerated cleanup could be crucial in preventing spills from reaching sensitive coastlines and marine ecosystems.

Beyond speed, the fire whirls significantly cut down on the thick, black smoke typically associated with burning oil spills. The spinning flames act like a powerful incinerator, destroying smoke-producing particles and vaporizing most of the oil, minimizing the toxic tar-like residue left on the water's surface.

The experiment involved building a 16-foot-tall structure to control airflow and ignite a pool of crude oil. The resulting fire whirl, reaching nearly 17 feet high, burned oil about 40 percent faster, reduced soot emissions by 40 percent, and achieved up to 95 percent fuel consumption efficiency compared to standard burns.

While fire whirls offer immense potential, controlling them requires precise conditions, described by the researchers as a "Goldilocks" zone, highlighting the challenges for practical application. However, the team envisions portable systems that could deploy these fire whirls on demand, transforming oil spill response into a more effective and environmentally friendly process.

Goethe's amber collection, now managed by Klassik Stiftung Weimar and housed at the Goethe National Museum, comprises 40 pieces of Baltic amber. Two of these specimens contained fossilized animals that were nearly invisible to the naked eye because the amber pieces had never been polished. To get a closer look, researchers from the University of Jena employed modern scanning techniques at the German Electron Synchrotron (DESY) in Hamburg.

Using synchrotron micro computed tomography, the team created detailed 3D images of the fossils, revealing three insects: a fungus gnat, a black fly, and an ancient ant. The ant, identified as an extinct species called †Ctenobethylus goepperti, particularly captured the scientists' attention.

"Thanks to its excellent preservation and extensive investigations, we were able to describe it in greater detail than ever before and gain new information about the species and its relationships," explained Bernhard Bock from the Phyletisches Museum of the University of Jena. The scans allowed for unprecedented examination of features, including fine body hairs on the worker ant and internal skeletal structures within its head and thorax, offering valuable insights into the species' anatomy and evolution.

The research team also developed a complete digital reconstruction of the fossil, making it available online. "We have fully processed the specimen and, based on the newly acquired information, created a 3D reconstruction that is available online," said Daniel Tröger from the University of Jena. "This model helps colleagues worldwide to identify and compare further fossils of this species." Comparisons with the modern ant genus Liometopum suggest these ancient ants likely lived in large tree nests, which could explain their common preservation in amber.

While Goethe owned these amber specimens, his interest focused mainly on their optical properties, even using them to create lenses for his color theory studies. By his time, amber and its fossils were already subjects of scientific study, with early publications available in his library. However, the full scientific significance of these fossils was yet to be understood, and the discoveries made today were beyond the imagination of researchers from his era.

"Goethe is regarded as the founder of morphology and would likely have been delighted to see how we were able to gain valuable insights in this field using entirely new methods," remarked Bernhard Bock. "At the same time, the results demonstrate the value of such historical collections. It is truly fascinating that an object originating from his hand and his era, when this science was just beginning, can still enrich us so much today." The findings underscore the enduring scientific value of historical museum collections, with modern imaging techniques revealing hidden stories from Earth's distant past within seemingly ordinary objects.

Studying beluga whales is notoriously tough due to their Arctic habitat, often hidden beneath ice and deep water. However, a 13-year project involving researchers from Florida Atlantic University, the Alaska Department of Fish and Game, and local hunters collected DNA samples from 623 whales, offering unprecedented insight into their social and reproductive lives.

Lead author Dr. Greg O'Corry-Crowe explained that while scientists predicted a polygynous system where dominant males monopolize mating, the genetic analysis showed a more nuanced picture. Both male and female belugas had offspring with multiple partners, though males were only moderately polygynous. This suggests males might "play the long game," securing a few matings each year over their potentially 90-year lifespan.

The females' mate-switching strategy is also fascinating, potentially acting as a "bet-hedging" tactic to avoid mating with less desirable partners. This flexibility appears to be working wonders for the Bristol Bay belugas, who, despite numbering only around 2,000, exhibit high genetic diversity and minimal inbreeding, comparable to much larger populations.

Researchers caution that this mating system might not be universal among beluga populations, as differences in physical traits like size between males and females suggest varying levels of male competition elsewhere. Future studies, potentially using drones to observe mating behaviors, aim to uncover more about the complex and adaptable social lives of these captivating Arctic whales.

The cave, situated over 7,300 feet above sea level, showcases evidence of repeated use over approximately 2,000 years, challenging previous assumptions about prehistoric peoples' limited engagement with high-altitude environments. The discovery of dozens of ancient hearths filled with crushed green mineral, potentially malachite, indicates early copper processing activities.

"For a long time, high-mountain environments were seen as marginal, places prehistoric communities passed through occasionally," explained Professor Carlos Tornero, lead author of the study published in Frontiers in Environmental Archaeology. "But we found a really rich archaeological sequence, including multiple combustion structures and a very large number of green mineral fragments."

The site, known as Cave 338, yielded 23 hearths within its deeper layers, with dates ranging from about 5,500 to 4,000 years ago. The presence of thermally altered mineral fragments, unlike other materials in the cave, strongly suggests deliberate processing by fire, rather than accidental burning.

Adding another layer of mystery, human remains including a child's finger bone and baby tooth were recovered from the same layer, sparking speculation that the cave might have served as a burial site. Other artifacts, such as pendants made from shell and a bear tooth, suggest connections with other communities and possibly symbolic significance tied to the local landscape.

Researchers are continuing their work to confirm the mineral's identity and origin, and future excavations aim to fully uncover the cave's history and the extent of its use by ancient peoples.

Researchers from Columbia University and University Hospital Tübingen discovered that disabling the NFIL3 protein allowed engineered immune cells, known as CAR T cells, to remain active for longer and fight tumors more effectively. This breakthrough, detailed in the journal Cancer Discovery, could significantly enhance CAR T-cell therapy, a cutting-edge personalized cancer treatment.

CAR T-cell therapy involves genetically modifying a patient's own immune cells to target and destroy cancer cells. While this approach has shown impressive results against certain blood cancers, its success against solid tumors has been limited. The research team, co-led by CAR T-cell pioneer Prof. Michel Sadelain and Prof. Judith Feucht, aimed to uncover the reasons behind this limitation.

Through a large-scale analysis of proteins that regulate gene activity, the scientists pinpointed NFIL3 as a key player in CAR T-cell exhaustion, a state where these cells lose their cancer-fighting power. By removing NFIL3 using CRISPR gene-editing technology, the CAR T cells demonstrated enhanced longevity, multiplication, and anti-tumor capabilities in laboratory studies.

"Switching off NFIL3 could be a decisive step toward significantly improving the long-term potency of CAR T cells," explained Prof. Feucht. This was further validated in mouse models, where CAR T cells lacking NFIL3 showed superior tumor control and extended survival rates.

While further research is necessary before human trials can commence, these findings offer a promising avenue for strengthening CAR T-cell therapy and potentially broadening its application to a wider spectrum of cancers, particularly solid tumors that have historically been difficult to treat. "Our goal is to improve the effectiveness of CAR T cells in solid tumors as well," stated co-first author Celina May. "We expect this to open up new possibilities in the treatment of cancer patients," added Feucht.

An international research team, spearheaded by scientists from the University of Sydney and utilizing CSIRO's ASKAP radio telescope, has linked these mysterious bursts to a rare class of objects known as accreting white dwarf stars. "For the first time, we've been able to connect one of these enigmatic signals to a specific type of stellar system," explained lead author Kovi Rose, a PhD student at the University of Sydney and CSIRO. "We've confirmed the source is a 'cataclysmic variable,' a white dwarf actively pulling material from a companion star."

The newly identified system, dubbed ASKAP J1745−5051, features a white dwarf and a red dwarf locked in an incredibly tight orbit, completing a revolution in just over an hour. A white dwarf is the dense, Earth-sized remnant of a dead star, while its companion is a much larger, less dense red dwarf. As the white dwarf siphons gas from its partner, the material heats up, emitting X-rays, while magnetic field interactions generate powerful radio bursts. These emissions repeat on a predictable 1.4-hour cycle.

"These emissions are all tied to the orbital motion of the system," Rose noted. "What's fascinating is that the radio and X-ray signals don't peak simultaneously, indicating they originate from different parts of the system." Researchers believe the radio waves are generated where the stars' magnetic fields collide with the stream of charged particles heading towards the white dwarf, creating focused radiation bursts that sweep through space.

This discovery challenges earlier theories that proposed unusually slow-spinning neutron stars might be responsible for these signals. Instead, it strongly suggests that at least some long-period radio transients stem from binary star systems involving white dwarfs. Professor Murphy from the University of Sydney highlighted the significance: "This is the first instance where we can clearly observe both stars and the accretion process in action."

Scientists are hailing ASKAP J1745−5051 as a "cosmic Rosetta stone," a key object for deciphering other mysterious radio transients. Its discovery was made possible by ASKAP's advanced capabilities, which excel at detecting faint and unusual signals. This system offers a unique window into extreme physical conditions, acting as a natural laboratory for testing our understanding of matter under intense gravitational forces and strong magnetic fields.

The research team plans further observations across radio, optical, and X-ray wavelengths to gain a deeper understanding of signal production and to determine if similar mechanisms explain the broader population of long-period radio transients. "We're only just beginning to understand this new class of cosmic events," Rose concluded.

Researchers from the University of Bonn teamed up with citizen scientists to measure just how much plastic sheds from sponges during typical use. They combined lab experiments using a gadget called "SpongeBot" with real-world data from households in Germany and North America. Volunteers used different types of sponges in their daily routines, and scientists tracked material loss over time.

The findings are clear: every sponge tested released microplastics. Depending on the sponge's material, individuals could be contributing anywhere from 0.68 to 4.21 grams of microplastics annually. Sponges with less plastic content naturally shed fewer particles. The citizen science aspect was key, ensuring the data reflected actual dishwashing habits.

While the numbers sound concerning, especially when scaled up to entire countries (potentially hundreds of tons of microplastics annually from one sponge type alone), the study's life cycle assessment pointed to a much larger environmental issue: water consumption. Washing dishes by hand racks up about 85 to 97 percent of its total environmental impact from the water used, dwarfing the contribution from microplastic emissions.

So, while reducing microplastic shedding is a good goal (opt for sponges with lower plastic content!), the most significant way consumers can lighten their environmental footprint when cleaning dishes is by conserving water. The research, published in Environmental Advances, highlights that smart choices about water usage have a far greater positive impact on the planet than solely focusing on the sponge material itself.