Exploring the Chemistry of Giant Exoplanet Beta Pictoris b: Insights from Astronomers

Posted on July 9, 2026 by Igor Mitreski

Using the advanced GRAVITY+ instrument at ESO’s Very Large Telescope Interferometer (VLTI), astronomers have measured the carbon isotope ratio in the atmosphere of the young exoplanet Beta Pictoris b, offering groundbreaking insights into the formation of giant planets.

Artist’s impression of a gas giant exoplanet within the disk of Pictoris Beta. Image credit: L. Calçada / ESO.

Beta Pictoris b, discovered in November 2008 via ESO’s Very Large Telescope, is a gas giant resembling Jupiter but with a mass between 9 and 13 times greater.

This exoplanet orbits its host star Pictoris Beta at a distance eight times greater than that between the Earth and the Sun.

The host star is also accompanied by at least two planets and a circumstellar disk filled with gas and dust, which could ultimately evolve into an icy body torus similar to the Kuiper belt in our solar system.

In this recent research, Antonia von Stauffenberg, a Ph.D. student at the Max Planck Institute for Astronomy, and her team sought to explore the origins and possible atmospheric variability of Beta Pictoris b.

They employed the cutting-edge GRAVITY+ instrument for their observations.

“We utilized a method developed years ago to determine the planetary formation location within its disk,” the researchers detailed.

“By analyzing the relative abundance of two carbon isotopes (C) trapped in carbon monoxide (CO) gas of Beta Pictoris b’s atmosphere, we can deduce whether the planet formed inside or outside the disk’s icy regions.”

“As radiation from the host star heats the disk from its center, it directly correlates to how far from the star the planet formed.”

The temperature boundary at which gas condenses into ice is commonly referred to as the snow line.

“Isotopes contain the same number of positively charged protons but differ in neutrons, such as carbon-12 (¹²C) and carbon-13 (¹³C).

“Despite their differing masses, their chemical properties are similar.”

“In cosmic contexts, carbon often exists in combinations with oxygen, appearing as ¹²CO and ¹³CO molecules.”

“Interestingly, past assessments of the ¹²CO/¹³CO diagnostic yield were conducted using the original GRAVITY setup, resulting in relatively low ratios.”

“We suspected that the original GRAVITY instrumentation was insufficient for resolving key signals in this dataset and advised caution in interpreting the results.”

“Following the rationale above, preliminary findings suggest Beta Pictoris b likely formed in the outer disk, beyond the snowline, by accumulating CO ice instead of gaseous CO.”

“Yet, positioned approximately 10 astronomical units from its star, Beta Pictoris b orbits within the disk’s transition zone between the host star and the snowline, where gas predominately comprises CO.”

“If these results hold true, they imply that Beta Pictoris b may have migrated across the disk during its formation.”

Astronomers also detected subtle variations in magnetic flux from the planet over time.

“While statistically insignificant, the primary variation closely corresponds to the planet’s rotation period of approximately 8.7 hours,” the researchers noted.

“If confirmed, this could indicate the presence of clouds or chemical processes in Beta Pictoris b’s atmosphere, but further sensitive observations are essential.”

“The proposed restoration plan for the gas giant’s birthplace necessitates new, precise measurements of the ¹²CO/¹³CO abundance, clearly indicating a position in the warmer inner zones of its natal planet-forming disk.”

“Moreover, this ratio aligns well with values typically found in the interstellar medium extending across our solar system and the Milky Way.”

“The majority of the 12 young gas giant planets assessed for CO ratios displayed comparable values.”

“This consistency may actually signal challenges, as carbon isotope abundances appear to provide minimal diagnostic value when determining a planet’s location relative to its host star.”

“The probable explanation is that fluctuations during planet formation are too subtle to be captured effectively by our proposed methodology.”

“This suggests that ¹²CO/¹³CO ratios may not provide specific insights into individual planet-forming environments.”

“Consequently, we are likely overlooking essential physical factors influencing the chemistry of CO ice in planet-forming disks.”

“Hence, the ¹²CO/¹³CO ratio may not shed substantial light on the distinction between gaseous environments and regions abundant in CO ice.”

“At this moment, this wide-orbiting gas giant remains reluctant to disclose its origins.”

“We require innovative tools capable of differentiating between planet formation scenarios, and GRAVITY+ could significantly contribute to identifying and evaluating these scenarios.”

The findings are published in today’s issue of Astronomy and Astrophysics.

_____

A. von Stauffenberg et al. 2026. ¹³CO and potential variations in β Pictoris b using GRAVITY+. A&A 711, L2; doi: 10.1051/0004-6361/202660275

Source: www.sci.news

Exploring the Surprising Physics Behind Lugworm Waste: Fascinating Insights!

Posted on July 9, 2026 by Igor Mitreski

Feedback: A weekly column brimming with quirky stories, outlandish advertising claims, and perplexing instructions.

The Physics of Defecation

News Editor Alexandra Thompson of the University of Amsterdam explains the intriguing origin of the poop emoji — Hoe de poep-emoji zijn vorm kreeg, which translates to “how the poop emoji got its shape.”

For those unfamiliar with emojis beyond smileys, the poop emoji stands out. It’s typically depicted as a conical mound resembling coiled feces. Emojipedia describes it in a relatable manner, comparing it to “soft serve ice cream.” However, during this heat wave, that imagery takes on a rather unsavory twist.

If you watched the 2017 animated film The Emoji Movie, you might recall the poop emoji as a notable character, voiced by none other than Patrick Stewart, known for his Stentorian delivery.

A recent study published in Nature Communications in April explores the physics behind lugworm feces. The authors describe how various animals, including earthworms and some mammals, produce coiled poop, much like the emoji itself. This shape emerges from “the coiling of a ‘rope’ of fluid falling onto a hard surface,” influenced by gravity, inertia, and viscosity.

Remarkably, lugworms defy conventional defecation by ejecting waste upward. They inhabit U-shaped burrows on sandy beaches within the intertidal zone, positioning their anus just below the burrow entrance. At low tide, they expel waste upward, leaving marks on the sandy flat.

Despite their unconventional method, lugworms still produce coiled poop. They accomplish this against the odds of “buckling instability,” indicating their evolutionary mechanism is effective.

Unlike animals that defecate downwards, where the drop height is vital, the coil’s radius is determined solely by material properties and rope shape. The researchers elaborated on this mathematics, noting their model can also explain the curling behavior of other substances, such as rice noodles and spaghetti. The elegance of these findings demonstrates the universe’s remarkable design.

Bayeux Tapestry Queue

The art of queuing and optimizing it for fairness and efficiency presents intriguing mathematical challenges. For example, when a train runs late, should it receive priority—possibly delaying others—or wait? Determining the fairest approach for passengers while maximizing the rail system’s efficiency remains a complex question.

History enthusiast and Managing Editor Kelsey Hayes recently faced a virtual queue while attempting to access early ticket sales for the British Museum’s Bayeux Tapestry exhibit, scheduled to run for the first time in the UK in 900 years. Kelsey, a museum member, received an email in early June promoting pre-sales two weeks before the general public.

The email urged her to “register to reserve” a spot, leading Kelsey to comment on the seemingly pointless exercise. However, she soon encountered an online queue with “over 1,400 people and a 20-minute wait.”

This exercise was a tactic to ensure members organized their login details to prevent registration or password issues later. If you know Kelsey or Feedback, waiting 20 minutes to reset passwords is not typical.

Two weeks later, when member reservations became available, Kelsey reported, “It took us four hours in line to secure a time slot.” She would be furious to discover that likely the Bayeux Tapestry wasn’t crafted in a bayou, nor is it technically a tapestry.

Not My Bag

Feedback often pokes fun at hubris, so we’re excited to present news of a bag made from a patented substance known as “T-Rex Leather.” However, it didn’t sell at the Paris auction in June. Initially expected to fetch over $500,000, the bid ultimately fell short.

This unique bag was likely produced using preserved collagen from a Tyrannosaurus rex femur, but here’s the catch: true leather is derived from the animal’s skin, and this “T-Rex Leather” did not come from a Tyrannosaurus skin.

Collagen is the primary protein found in skin, but recreating Tyrannosaurus skin entails an intact Tyrannosaurus genome to grow skin cells. Unfortunately, the oldest preserved DNA is only 2 million years old, while Tyrannosaurus went extinct 66 million years ago.

Without the DNA or a complete genome, growing Tyrannosaurus skin cells is impossible. While we can speculate this bag’s failure to sell may relate to its questionable provenance, we can’t overlook the likelihood that its outdated color played a significant role.

Have a story for Feedback?

You can share your article with Feedback at feedback@newscientist.com. Don’t forget to include your home address. This week’s and past feedback are available on our website.

Source: www.newscientist.com

Study Reveals Night Owls Eat Less at Breakfast and More at Midnight: Key Insights on Eating Habits

Posted on July 9, 2026 by Igor Mitreski

New research reveals that night owls may face a higher risk of obesity and slower metabolism due to their tendency to consume a significant portion of daily calories late at night. This study focused on women of European and Pacific descent living in New Zealand.

Research by van der Merwe et al. examined the link between chronotype and dietary habits, meal timing, body composition, and metabolic indicators in healthy women of European and Pacific descent in New Zealand. Image credit: RitaE.

Humans generally organize their sleep and wake patterns within a 24-hour cycle based on personal preferences.

These preferences are known as chronotypes, impacting not only sleep and wake times but also meal timing.

Morning people typically wake and sleep several hours earlier than night owls.

Understanding your chronotype can provide insight into your eating habits.

“Are you an early riser or a night owl? An early riser is classified as a morning chronotype, while a night owl prefers later bedtimes and wake-up times,” says Professor Roseanne Kruger from Massey University and Griffith University.

“Chronotype has significant effects on our food preferences, behaviors, and metabolic health.”

The study monitored 287 healthy women from European and Pacific Islander backgrounds in New Zealand.

Participants completed extensive questionnaires on sleep patterns, maintained a 5-day food diary, underwent body composition scans, and provided fasting blood samples for metabolic analysis.

Results showed over half the participants were classified as intermediate chronotypes, 34% as night owls, and 12% as morning owls.

The average BMI for night owls was 31.4 compared to 26.1 for morning and intermediate chronotypes.

Night owls displayed higher total body fat and a higher android-to-gynoid fat ratio, which is linked to abdominal fat accumulation.

Although total daily food intake was similar, meal timings were significantly different.

Morning types consumed most of their energy, protein, carbohydrates, and fats before 10 a.m., whereas night owls ingested more nutrients after 8 p.m.

This trend was most pronounced among night owls with higher body fat percentages.

Night owls tended to eat less in the morning but compensated by consuming more energy and fats during late-night hours.

Compared to morning types, night owls had lower intakes of various nutrients essential for a healthy diet, including fiber, vitamins A and E, folate, calcium, magnesium, potassium, and iodine.

While night owls consumed less caffeine and alcohol, their overall energy and carbohydrate intake was slightly higher.

Metabolic health assessments indicated these dietary habits were linked to poorer health outcomes.

Evening chronotypes exhibited elevated levels of triglycerides, insulin, glycated hemoglobin, and leptin, alongside lower levels of HDL (the “good” cholesterol) and the appetite-regulating hormone ghrelin.

Correlation analysis further suggested that increased energy intake during the morning was associated with higher HDL cholesterol and lower insulin and glycated hemoglobin levels.

Conversely, higher energy consumption in the evening correlated with elevated triglyceride, insulin, and glycated hemoglobin levels.

“The total energy intake was consistent across both morning and night owls,” the researchers noted.

“However, night owls ate significantly less between 3 a.m. and 9:59 a.m. but consumed more between 8 p.m. and 2:59 a.m., which was the reverse for morning owls.”

“This night-time eating pattern correlates with increased body fat percentage, abdominal fat, and elevated blood sugar and lipid levels.”

“Eating during night hours, when the body is naturally inclined to fast, contributes to food storage rather than consumption, heightening the risk of obesity and associated health issues.”

For more details, refer to the study published on July 7, 2026, in Frontiers in Nutrition.

_____

Karlian van der Merwe et al. 2026. Associations Between Chronotype and Dietary Intake, Meal Timing, Body Composition, and Metabolic Biomarkers. Frontiers in Nutrition 13; doi: 10.3389/fnut.2026.1862060.

Source: www.sci.news

Discovering Jupiter’s Future: Giant Exoplanet Orbiting White Dwarf Star Provides Insights into Planetary Evolution

Posted on July 7, 2026 by Igor Mitreski

Astronomers employing NASA/ESA/CSA’s James Webb Space Telescope have successfully analyzed the atmosphere of a giant exoplanet, WD1856+534, which orbits a white dwarf star. These groundbreaking findings provide insight into the ultimate fate of giant planets surrounding stars with masses akin to our Sun.

WD 1856b is a gas giant planet orbiting its star 50 times closer than Earth does the Sun. Image credit: NASA/ESA/CSA/Ralf Crawford, STScI.

“Most stars, including our Sun, eventually exhaust their fuel, leaving behind a white dwarf,” noted Dr. Ryan McDonald, an astronomer at the University of St. Andrews, along with colleagues.

“The implications of this stellar evolution on orbiting planets remain largely unclear.”

“Multiple planet candidates have been discovered around white dwarfs, suggesting that planets can endure the transition period when stars evolve into red giants before becoming white dwarfs.”

“However, there is still limited knowledge regarding the atmospheric composition of such planets.”

The new study focused on WD1856b, identified in 2020 by astronomers using NASA’s TESS and Spitzer Space Telescopes.

This exoplanet boasts a radius of 0.9 times that of Jupiter and a mass between 4.3 and 10.9 times Jupiter’s mass.

It orbits the 10-billion-year-old white dwarf star WD 1856+534, which is situated 80 light-years away in the Draco constellation.

“This planet is approximately the same size as Jupiter, while the white dwarf star it orbits is the size of Earth, making this planet seven times larger than its star,” Dr. McDonald stated.

Utilizing Webb’s Near Infrared Spectrometer (NIRSpec), astronomers detected hydrocarbons and aerosols, including methane, in WD 1856b’s atmosphere.

They also measured thermal radiation emanating from the planet’s night side.

“We observed tiny cloud particles and clear indications of hydrocarbons (possibly methane),” shared Cornell University astronomer Victoria Boehm. “This marks the first instance of observing the atmosphere of a planet transiting a dead star.”

“We have recently executed four additional observations of WD 1856b with Webb to delve deeper into the chemistry of its atmosphere, and we’re eager to analyze the results.”

Webb evaluated the composition of WD 1856b as it transited in front of the star, revealing signs of methane. Image credit: NASA/ESA/CSA/Joseph Olmsted, STScI.

Researchers estimate that the planet’s atmosphere has a temperature ranging from 390-412K, significantly higher than the expected temperature of a giant planet (160K).

This heating likely transpired between 3 billion and 5.5 billion years after the star converted into a white dwarf.

In this context, the planet would have initially occupied a wider orbit, safeguarding it from the star during its cataclysmic red giant phase, only to eventually move to its current position.

“As the planet migrated inward, interactions with the white dwarf’s formidable gravity would have induced a significant temperature spike, which has been decreasing ever since,” stated Dr. Christopher O’Connor of Northwestern University.

“The primary question is how WD 1856b evolved into its current state, and there are two prevailing theories.”

“One hypothesis suggests the planet was engulfed by its dying host star and somehow persisted within.”

“The alternative theory posits that the movement was influenced by gravitational dynamics of other bodies within the system.”

The white dwarf is part of a triple star system, where its companion star may play a role in shaping WD 1856b’s orbital path.

In approximately 5 billion years, our Sun will exhaust its hydrogen fuel, expanding to over 100 times its current dimensions, entering the red giant phase.

Following this, it will shed its outer layers, ultimately becoming a white dwarf.

Mercury, Venus, and potentially Earth may be obliterated during this transition.

However, the fates of outer planets, particularly gas giants, remain uncertain.

“We typically rely on telescopes to examine the past, but for the first time, we can observe what may happen to exoplanets around remnants of Sun-like stars,” Dr. McDonald remarked.

“It’s akin to employing a time machine to glimpse into the distant future of our own solar system.”

For further details, see the findings outlined in this week’s edition of Nature.

_____

RJ McDonald et al. 2026. Aerosols and hydrocarbons in the atmosphere of a white dwarf star. Nature 655, 76-80; doi: 10.1038/s41586-026-10514-7

Source: www.sci.news

Hubble Explores 13 Billion-Year-Old Globular Cluster: Insights from the Universe’s Ancient Treasures

Posted on July 6, 2026 by Igor Mitreski

Astronomers employing the NASA/ESA Hubble Space Telescope have obtained a stunning image of NGC 6426, an ancient globular star cluster located in the outer halo of the Milky Way galaxy. This remarkable object contains two distinct generations of stars, serving as a cosmic time capsule from an era when the universe was still forming its heaviest elements.

This Hubble image showcases the globular cluster NGC 6426 located about 67,000 light-years away in the constellation Ophiuchus. Image credits: NASA / ESA / A. Dotter, Dartmouth College / Gladys Kober, NASA and The Catholic University of America.

NGC 6426 is situated approximately 67,000 light-years from Earth, at the celestial equator within the constellation Ophiuchus.

This globular cluster, also referred to as C 1742+031 or GCl 76, was discovered by German-British astronomer William Herschel on June 3, 1786.

Estimated to be around 13 billion years old, NGC 6426 formed only a few hundred million years after the Big Bang. Given that the universe is about 13.8 billion years old, this cluster encapsulates evidence of conditions that existed in the early universe.

Unlike many clusters, NGC 6426 traverses the sparse outer halo of the Milky Way rather than orbiting within the galaxy’s disk.

Initially thought to consist solely of contemporaneous stars, advanced high-resolution spectroscopy has revealed that NGC 6426 may harbor two distinct generations of stars.

“NGC 6426 is a collection of globular stars bound by their mutual gravity and ranks among the 150 known globular clusters in the Milky Way,” Hubble astronomers stated.

“These star groups are believed to have formed from the same collapsing gas cloud, often resulting in stars of similar ages. Stars in globular clusters are generally quite old.”

“At approximately 13 billion years old, NGC 6426 ranks as one of the oldest globular clusters in the Milky Way, almost as ancient as the universe itself.”

Astronomers utilized the Hubble Telescope to capture images of NGC 6426 as part of their research on globular star clusters within the Milky Way halo.

“In this image, blue represents shorter wavelengths of visible light, while red signifies longer wavelengths and some near-infrared light,” they explained.

“The colors in Hubble images are processed to accurately depict the wavelengths of light that pass through the sensors used during observations.”

“There exists a direct relationship between a star’s color and its temperature; hence, the blue stars in this image are hotter compared to the cooler red stars.”

The stars in NGC 6426 exhibit low metallicity, indicating a scarcity of elements heavier than hydrogen or helium.

“These conditions mirror those of the early universe, a time when matter predominantly consisted of helium and hydrogen, with heavier elements beginning to emerge through nuclear fusion within massive stars.”

Source: www.sci.news

Why Did Human Brains Evolve to Be Larger? Surprising Insights into Brain Size Evolution

Posted on July 6, 2026 by Igor Mitreski

Neanderthal skull (left) and Homo sapiens larger than early humans

Pascal Goetheruk/Science Photo Library

One of the defining features of our species is our notably large brain. However, a recent analysis of fossil skulls indicates that evolution hasn’t significantly favored larger brains during the past two million years of human evolution.

“Brain size has indeed increased over time, while face size has actually reduced,” states Katerina Harvati from the University of Tübingen, Germany. Yet, this development does not appear to be the result of natural selection.

Rather, the evolution of the human brain seems to have been influenced by various evolutionary pressures, which maintained brain size. Periodically, these constraints were relaxed, enabling the brain to grow larger.

Dr. Mark Hubbe from the University of Tennessee, Knoxville, along with Harvati, examined 87 hominin skulls, 24 of which belonged to modern Homo sapiens. The remainder were from extinct human species, such as Neanderthals (Homo neanderthalensis), Homo erectus, and Homo habilis. They gathered data on skull shape and size, concentrating on the braincase and facial features.

Over the past two million years, the human braincase has enlarged significantly, providing room for larger brains. Concurrently, human faces became flatter, characterized by reduced jaw prominence and smaller eyebrow ridges.

“There’s a pervasive hypothesis suggesting that increased cognitive ability drives selection,” says Harvati. This concept posits that intelligent individuals were favored, leading our ancestors to gradually develop larger brains over time.

To test this theory, Haverty and Hubbe employed a mathematical model that evaluated six different evolutionary scenarios influencing changes in skull shape and size. One scenario suggested gradual natural selection pressure favoring larger brains, while another scenario presented a more neutral approach. The remaining scenarios included fluctuating constraints around an optimal design and “punctuated equilibrium,” where long periods of stasis were punctuated by brief bursts of rapid evolution.

Findings indicated that changes in braincase size and shape are most effectively explained by neutral evolution, suggesting that random mutations impact brain size and shape without providing a significant advantage over previous designs. Evidence of stagnation further indicates that evolution exerts pressure on braincases to maintain similar dimensions.

While human faces underwent changes, the evolutionary constraint to preserve their shape appeared to be stronger.

This study provides insight into the mechanisms that have steered our evolutionary journey. Amelie Baudet at the French National Center for Scientific Research in Poitiers states, “This is precisely the kind of analysis we need right now.”

Although the study focused on skulls, it primarily addresses overall brain size and shape, which may not encapsulate the entire picture. Bode noted, “It’s not just about brain size; it likely involves brain reorganization.” She studies the imprints left by the brain within the skull, indicating that crucial areas like Broca’s area, associated with language, have evolved considerably over the last two million years.

Some researchers, like Gerhard Weber at the University of Vienna, argue that the sample size is insufficient for definitive conclusions. He remains skeptical about Harvati and Hubbe’s assertions that evolution kept our ancestors’ brains consistently sized. “As social animals, prehistoric societies likely featured varied divisions of labor,” he adds. In such contexts, exceptional intelligence may not have been a significant advantage.

Weber is intrigued by the notion that our brains grew not due to natural selection, but rather when constraints were lifted. “That’s a compelling idea,” he remarks.

Harvati suggests cooking may have played a critical role in this evolution. Since the brain demands substantial energy to function, and cooked food offers higher caloric value than raw, the advent of cooking could have provided the necessary energy boost for larger brains.

Topics:

Source: www.newscientist.com

Hominin Scavenging: Insights from ‘The Hobbit’ and Komodo Dragon Remains

Posted on July 3, 2026 by Igor Mitreski

*Homo floresiensis*: The Hobbit of Flores Island

Lionel Brett/Eurelio/Science Photo Library

A recent study on animal bones found in caves has suggested that the diminutive ancient humans, often referred to as “Hobbits,” who resided on Flores Island in Indonesia until approximately 50,000 years ago, possessed limited hunting abilities. Researchers argue that they primarily scavenged meat left by Komodo dragons.

The fascinating fossil remains of Homo floresiensis were first introduced to the public in 2004. These small hominins stood just over a meter tall, and their fossils date back between 90,000 to 50,000 years.

Research based on stone tools and charred bones previously led scientists to believe these hominins exhibited advanced behaviors such as controlled fire use and large-game hunting. However, the cognitive capabilities of these small-brained beings have come under scrutiny in recent years.

According to Elizabeth Veatch from the Smithsonian Institution, “The prevailing view in our field suggests that despite their brain size, some advanced cognitive skills were necessary for reaching and surviving on the island amidst declining animal populations.”

Liang Bua Cave—home to the Homo floresiensis remains—also contains many fossils of a dwarf elephant species, Stegodon florensis insularis. Veatch and her team suspect many of these creatures may have fallen prey to the Komodo dragon, a sizable reptile endemic to Flores and other Indonesian lands.

To investigate the bite marks left by Komodo dragons on the bones of large mammals, Veatch and her colleagues conducted an experiment at Zoo Atlanta, feeding a dead goat to one of the reptiles. “Since Stegodon elephants are extinct, we couldn’t directly experiment with them,” noted Veatch.

The aftermath revealed that of the 72 bones examined, 26 bore 192 tooth impressions. The researchers compared these results to over 3,000 remnants of Stegodon found in Liang Bua Cave, alongside nearly 7,000 later Homo sapiens bones. Each of these approximately 10,000 bones was scrutinized for any evidence of fire exposure.

The study found that Komodo dragons prefer the meatiest parts of carcasses, such as hind and front legs. However, the bones associated with Homo floresiensis were found mostly in less desirable areas like the skull and thoracic vertebrae, suggesting a limited capacity for large animal acquisition.

Of the extensive collection of over 3,000 Stegodon bones, only one showed indications of fire exposure—likely due to sediment disturbance and heating from subsequent human activities. In contrast, 20% of recent rat bones uncovered after the extinction of these hobbits bore signs of cooking.

Adam Blum from Griffith University asserts, “Our findings strongly indicate that Homo floresiensis likely scavenged remains, rather than hunted Stegodon.”

Martin Poe from the University of Western Australia points out the controversy surrounding earlier claims of hunting and fire use by Homo floresiensis. “These new discoveries align more closely with our understanding of other small-bodied hominins, such as australopithecines. Their brain size and body weight support a shift in behavior patterns,” he added.

Nonetheless, a prevailing challenge remains: Did Homo floresiensis evolve from larger hominids like Homo erectus or from smaller, more widespread ancestors? Clarification through further research in Flores is essential.

Navigating this narrative reveals two possibilities, yet significant inquiries remain, emphasizing the necessity for continued exploration into the evolutionary adaptations of Homo floresiensis.

Topics:

Evolution of Humanity/
Ancient Humans

Source: www.newscientist.com

Exploring Pain-Numbing Parasites: Insights from Sciworthy

Posted on July 2, 2026 by Igor Mitreski

Schistosoma mansoni

is a significant parasitic infection affecting millions globally. This parasite infiltrates the body through the skin, often going undetected, unlike typical bacterial infections that provoke pain and inflammation. The subtle entry of

S. mansoni

raises intriguing questions about the body’s immune response to such invaders.

Recent research from the University of Pennsylvania and Tulane University reveals that a specific type of pain-sensing neuron,

TRPV1+

, plays a critical role in detecting and countering

S. mansoni

during infection. TRPV1+ neurons are responsible for responding to heat, spicy foods, and certain pathogens. Upon activation, these neurons release pain-inducing molecules that alert the immune system. Although previous studies showed their effectiveness against bacterial and fungal infections, their role in combating parasites remained unclear.

To investigate how

S. mansoni

infects a host, researchers conducted experiments with groups of four to eight mice, matched by age and gender. Each experiment was performed two to three times for reliability. The mice were anesthetized, and their ears were exposed to a solution containing 150 live

S. mansoni

larvae, with Vaseline used to keep the solution in place. After 20 to 30 minutes, the researchers counted the remaining larvae in the mice’s ears to assess penetration.

The team measured the pain sensitivity of infected mice by placing them in a controlled environment and shining an infrared heat source on their feet. They recorded how quickly each mouse withdrew its paw, indicating pain. This test was repeated three times for each paw, allowing for the calculation of average withdrawal times. The findings suggested that mice infected with

S. mansoni

exhibited reduced responses from TRPV1+ neurons.

To delve deeper, the research team isolated dorsal root ganglion neurons from the skin of mice and cultured them in the lab. They introduced capsaicin, a compound from chili peppers, to measure calcium influx, indicating neuronal activity. This method revealed that 68% of neurons in uninfected mice responded to capsaicin, whereas only 26% did in infected mice, affirming the suppression of sensory neuron response by the parasite.

The researchers aimed to determine if enhancing neuronal activity could bolster resistance against parasite invasion. They genetically engineered mice to express a light-sensitive protein,

Channelrhodopsin

, within their TRPV1+ neurons. By stimulating these neurons with blue light for 30 minutes each day for five days prior to infection, they assessed the mice’s immune response six days post-infection. Using a laser, they counted immune cells in ear tissues and larvae in lung samples. Results indicated that mice with activated TRPV1+ neurons produced nearly double the immune response, blocked approximately twice as many larvae in their skin, and had about 20% fewer parasites in their lungs.

In a follow-up experiment, the researchers utilized a compound,

Esiniferatoxin

, to selectively destroy TRPV1+ neurons in a new group of mice. After three weeks, they tested the mice’s pain sensitivity using thermal analysis. Upon confirming reduced pain sensitivity, they exposed the mice to the parasite. The findings indicated that these mice exhibited a 1-3% weaker skin immune response and had approximately 25-30% more parasites in their lungs than controls, further emphasizing the protective role of TRPV1+ neurons early in infection.

In conclusion, the research indicates that

S. mansoni

has evolved mechanisms to suppress pain-sensing neurons like TRPV1+. These findings open avenues for future treatments targeting sensory neurons, potentially leading to topical creams or therapies that activate these neurons, thereby enhancing the body’s defenses against

S. mansoni

and similar parasitic threats.

Post views: 68

Source: sciworthy.com

Is the AMOC Current Slowdown Gradual and Reversible? Insights and Implications

Posted on July 1, 2026 by Igor Mitreski

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Visualization of Atlantic Ocean Flows from Satellite Images

Carsten Schneider/Science Photo Library

The Atlantic Meridional Overturning Circulation (AMOC) may face weakening due to freshwater influx from Greenland’s snowmelt. However, cutting-edge climate models indicate this slowdown is likely to be gradual and reversible if global warming is curbed.

AMOC is a critical ocean current system that conveys warm, salty water from the tropics to the North Atlantic. There, it cools, sinks, and circulates back southward along the ocean floor. The influx of fresh meltwater from Greenland’s ice sheet appears to be mixing with denser seawater, slowing its downward flow.

<p>Recent estimates indicate Greenland is losing approximately <a href="https://www.nature.com/articles/s41586-023-06863-2">30 million tons of ice</a>. Some experts express concerns that AMOC could undergo a sudden and irreversible collapse, potentially plunging Europe into near-Arctic conditions. One <a href="https://iopscience.iop.org/article/10.1088/1748-9326/adfa3b">study</a> suggests that AMOC might cross a crucial tipping point within decades.</p>
<p>However, modeling by <a href="https://research-portal.uu.nl/en/persons/oliver-mehling/">Oliver Mehring</a> and colleagues at Utrecht University revealed that while AMOC may weaken steadily under ongoing global warming, it is unlikely to reach a point of no return solely due to Greenland’s snowmelt.</p>
<p>“The prevailing notion that melting from the Greenland ice sheet could trigger an irreversible AMOC collapse is a significant oversimplification,” stated Mehring. “The snowmelt from Greenland alone is insufficient to push AMOC past its tipping point.”</p>

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<p>It is believed that atmospheric warming not only accelerates Greenland's melting but also directly undermines the AMOC by preventing brine in the North Atlantic from cooling adequately. This warming allows the ocean to hold more freshwater, which ultimately leads to increased rainfall, diluting saltwater, and reducing ocean mixing. This combination of warming and freshwater influx diminishes the sinking action crucial to AMOC.</p>

<p>While most predictive models of future climate change concentrate on atmospheric warming's impact on AMOC, <a href="https://research-portal.uu.nl/en/persons/oliver-mehling/">Mehring</a> and his team found that atmospheric warming could weaken AMOC by a staggering 60% by 2300. If the volume of Greenlandic snowmelt were to increase, the AMOC's strength could diminish by an additional 20%.</p>

<p>Nonetheless, their research indicates that if atmospheric CO2 levels were to decrease by 1% annually starting in 2250, AMOC could fully recover by around 2400. Although these models are not designed to predict the exact timeline or extent of AMOC changes, they imply that increased freshwater input from Greenland won't lead the AMOC over the tipping point.</p>

<p>A reduction of 80% in AMOC could still lead to crop failures in Western Europe, ice formation in the North Sea, and disruption of tropical monsoon patterns. Fortunately, the study indicates that such declines would be gradual, predictable, and reversible if humanity ceases fossil fuel combustion. As <a href="https://www.bas.ac.uk/profile/lsim/">Louise Sim</a> from the British Antarctic Survey commented, "While scenarios of AMOC crashing are conceivable, they are unlikely to occur. Instead, AMOC shows a strong linear relationship with cumulative CO2 emissions."</p>

<p>Despite these findings, the possibility of a tipping point cannot be completely dismissed. Previous research conducted by <a href="https://www.uu.nl/staff/RMvanWesten">René van Westen</a> and colleagues at Utrecht University, using a different model, suggested that significant melting from Greenland could lead to AMOC's irreversible collapse. However, this model applied meltwater at a constant rate rather than simulating the gradual increases observed in reality.</p>

<p>“Other climate models have predicted crossings of the tipping point under 21st-century climate change, illustrating that results can be model-dependent,” van Westen remarked.</p>

<p>In addition to Greenland’s melting, several other climate changes pose risks to the AMOC. For instance, freshwater from Antarctic snowmelt could disrupt global circulation dynamics, of which AMOC is a vital component. However, the impacts remain uncertain; depending on the timing of Antarctic melt, it could also help sustain the AMOC.</p>

<p>This new study does not eliminate the risk of an AMOC tipping point but contributes valuable insights to the ongoing climate discussion, highlighted <a href="https://scholar.google.com/citations?user=Cn7wuysAAAAJ&amp;hl=en">Jonathan Baker</a> from the UK’s Met Office.</p>

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Source: www.newscientist.com

New Research Reveals Origins of Human Laughter: Insights into Its Evolution

Posted on June 29, 2026 by Igor Mitreski

Human laughter, characterized by rapid and rhythmically timed bursts, is not exclusive to humans. Recent research from the University of Warwick and the University of Portsmouth reveals that all great apes, including orangutans, gorillas, and chimpanzees, share the same fundamental timing structure for laughter. This finding indicates that our common ancestor with these great apes was capable of recognizable smiling at least 15 million years ago.

Analysis of laughter tempo in five great ape species: orangutans, gorillas, bonobos, chimpanzees, and humans. Points represent individual observations, with color coding for evolutionary distance. Image credit: De Gregorio et al., 10.1038/s42003-026-10499-z.

Chiara de Gregorio, a researcher at the University of Warwick, stated, “Sounds do not fossilize, complicating the traceability of song sounds, spoken words, and languages.”

She added, “Comparative studies of the behaviors of our closest living relatives, the (non-human) great apes, serve as the only extant model for the vocal abilities and adaptive features that our ancestors may have lost.”

“Although every major hominid lineage has developed unique vocalization repertoires shaped by their specific social ecologies, laughter remains a conserved vocalization across species and age-sex categories.”

This study recorded laughter in various tickle play and social play scenarios involving 17 individuals from all five great ape species.

The research comprised four orangutans, two gorillas, three bonobos, four chimpanzees, and four humans, including children aged 6 months to 7 years.

Analysis showed that laughter across all species is isochronous, meaning it occurs at regular, evenly spaced intervals. This rhythm mirrors those found in music and speech.

Scientists have confirmed that this fundamental rhythmic structure was already present in our common ancestor 15 million years ago and continues to be remarkably conserved across modern great apes.

However, they identified noteworthy differences along the evolutionary line. The closer a species is to humans on the evolutionary tree, the faster and more variable their laughter becomes, with increased sensitivity to social contexts.

Humans were unique in adjusting the tempo of their laughter depending on whether they were engaged in tickling or free play.

The researchers noted that variations in human laughter tempo are perceived as more emotionally warm and socially positive, indicating that rhythmic flexibility holds significant social implications.

Dr. Adriano Lamelia from the University of Warwick remarked, “Assessing the vocal forms of extinct ancestors directly is impossible.”

“Laughter is an evolutionarily ancient trait shared by all extant great apes, providing a valuable evolutionary perspective on vocal changes that occurred throughout human evolution leading to the emergence of the first humans.”

“This research counters the classical view that the first humans suddenly acquired distinct vocal control abilities; instead, the evolution of laughter illustrates the continuum of vocal control capabilities that developed cumulatively over 15 million years.”

For further details, refer to the findings published in the Journal on June 25, 2026, in Communication Biology.

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C. De Gregorio et al. 2026. The rhythm and timing of laughter reveal that human vocal plasticity is part of the hominid continuum. Comm Biol 9,824; doi: 10.1038/s42003-026-10499-z

Source: www.sci.news

First Discovery of Ancient Human DNA in Cave Paintings: Insights into Our Ancestry

Posted on June 26, 2026 by Igor Mitreski

Samples Collected from Rock Art in Tiberin, Spain

Avamia Archeos Alberto Martinez Villa

Ancient Rock Art Research — Samples Collected from Rock Art in Tiberin, Spain

Avamia Archeos Alberto Martinez Villa

A groundbreaking study conducted in the caves of Spain and Portugal reveals that ancient human DNA can persist for thousands of years on the surfaces of cave walls and rock art. This monumental discovery offers new insights into prehistoric humans and poses intriguing questions about whether Neanderthals engaged in cave painting.

“It’s the beginning of a new era,” says Genevieve von Petzinger, a researcher from the University of the Witwatersrand, Johannesburg, South Africa. “This allows us to potentially connect with the actual artist who created these remarkable works. It’s truly extraordinary.”

From 2022 to 2025, the First Art Project focused on dating the oldest cave paintings, collecting samples from 11 caves across Spain and Portugal featuring rock art. These paintings, believed to be among the earliest known forms, include graphic images such as triangles, dots, and hand stencils executed with red ocher paint. Researchers extracted small shavings of paint and calcite layers formed on cave walls via mineral precipitation.

Given that cave art is typically crafted using tools like fingers or by spitting paint, the researchers aimed to determine if the DNA of the artists had been preserved. While ancient human DNA has been known to exist in cave sediments, its presence on cave walls was previously undocumented.

This changed with the significant discovery of ancient human DNA in red spots that resemble semicolons within Portugal’s Escur Cave.

“It was a pleasant surprise,” notes Alba Bossams Mesa, from the Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany. “This is the first instance of ancient human DNA being identified on a cave wall. However, I cannot definitively conclude that this DNA belongs to the artist.” Bossams-Mesa adds, “It could be from someone who encountered the artwork at a later time, or perhaps even someone who merely sneezed.”

Nevertheless, this opens up exciting possibilities for identifying the creators of the artwork. “It’s as if the cave walls have transformed into the pages of an unfinished book, gradually filled with new discoveries,” states Hipolito Collado Giraldo, an Archaeologist from the government of Extremadura, Spain.

Pigment Samples Collected from Spain’s Altamira Cave Ceiling

Matthias Meyer

Another unexpected finding emerged when researchers sampled a control area of the cave wall devoid of artifacts, where they also discovered ancient human DNA. This genetic material likely originated from prehistoric visitors who touched the walls. “We were genuinely surprised,” says Corrado Giraldo. This suggests that even where cave paintings or archaeological items are absent, cave walls can unveil critical insights about ancient humans who frequented these sites.

Furthermore, the findings indicated that the DNA found on the walls of Escoral Cave came from direct contact with ancient humans, rather than sediment that had settled on the walls. In contrast to mixed animal DNA found in cave sediments, the genetic material on the Escoral walls solely consisted of human DNA.

The ancient DNA also provided intriguing insights into the individuals from whom it originated: three samples were primarily female and one was male. This genetic profile aligns closely with a group historically known as Western hunter-gatherers, dating from approximately 5,200 to 17,000 years ago.

Though the recovered DNA is insufficient for precise dating, it is known that Escoral Cave had been sealed off for the past 4,000 to 5,000 years, indicating the genetic material may be older.

This research marks only the beginning. Earlier this month, First Art researchers, including von Petzinger and Corrado Giraldo, conducted thorough sampling at various other caves in Spain, such as Nerja and Aldales, which are linked to Neanderthal art, although that connection remains contentious. “One question I am eager to explore is whether Neanderthals created art,” remarks Bossams-Mesa.

The potential of extracting ancient DNA from cave walls could revolutionize our understanding of ancient humans and their artistic expressions, asserts Francesco d’Errico from the University of Bordeaux, who was not associated with the study. “Did the artist identify as male, female, or perhaps even an animal? Were the drawings on the same panel crafted by the same individual? Will Neanderthal DNA eventually be discovered in the ancient paintings of the Iberian Peninsula, or does the hand stencil found in Indonesia contain Denisovan DNA? The possibilities are vast.”

However, ancient DNA was discovered in only one of the 24 rock art panels sampled, indicating that preservation may be more of an exception than a standard practice. “Currently, the success rate is quite low,” Bossams-Mesa observes. This may improve as researchers polish their methodologies for extracting minimal quantities of DNA from cave samples.

Corrado Giraldo expresses excitement about uncovering valuable information without the need for excavations, which can be destructive in nature. “Excavation inherently alters parts of the archaeological record,” he explains. “This groundbreaking discovery opens avenues for uncovering and reconstructing entirely new narratives without excavation—narratives that deepen our understanding of past peoples and societies.”

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Source: www.newscientist.com

Revolutionary Methods for Detecting Volcanic Eruptions: Insights from Sciworthy

Posted on June 25, 2026 by Igor Mitreski

Volcanologists dedicate their efforts to monitoring volcanoes, striving to predict potential eruptions accurately. The primary challenge lies in determining both the likelihood and exact timing of an eruption.

To tackle this issue, a team of researchers created an innovative early detection system designed to issue timely warnings about volcanic eruptions. Their key motivation was to improve upon previous warning systems, which often missed critical underground volcanic activities occurring just before an eruption.

Between 2014 and 2023, researchers carried out extensive tests to effectively identify transient low-frequency oscillations using a seismograph. The focus on these transient signals is crucial since they stem from earthquakes and other surface-related phenomena, which scientists utilize to predict volcanic eruptions. These include ground tilting caused by magma movement and volcanic gases. Scientists refer to these as “jerk” signals due to the sudden movements they represent.

The team conducted their experiments at Piton de la Fournaise, located on La Réunion Island off the southeast coast of Madagascar. They identified the jerk signal by analyzing short-term signals in existing experimental seismic data. During a live experiment, they detected a significant signal 8 kilometers (about 5 miles) from the volcano at the Rivière de l’Est seismic observatory. These signals indicated height changes on the surface as magma migrated, often appearing mere minutes to hours before an eruption.

Researchers measured the jerk signals in Newton meters per second, which reveals the velocity of physical changes occurring in or around the volcano. Alongside real-time experiments, they analyzed historical data to verify the accuracy of jerk signals and determine their occurrence just before eruptions.

To avoid false alarms, the research team distinguished between ocean tidal signals and transient jerk signals using advanced computational software. This step was necessary as ground-recording instruments are also sensitive to tidal movements.

The Jerk system issued its first automated warning in June 2014, alerting authorities an hour before the initial volcanic tremor, signaling that magma was nearing the surface. The last signal recorded in their study occurred on July 2, 2023, just 40 minutes prior to an eruption at a slow rate of 1.5 Newton meters per second. Throughout 2014 to 2023, jerk detections occurred anywhere from minutes to eight hours before an eruption.

To measure the reliability of the jerk signal, the team reviewed historical eruption records at Piton de la Fournaise. They established that for 24 eruptions between 1998 and 2010, jerk alarms would have activated 83% of the time. From 48 eruptions between 1998 and 2023, including those during real-time testing, approximately 42 jerk warnings would have been issued. Real-time analysis also revealed that the jerk signal’s accuracy has improved compared to eruptions from two decades ago.

While the research team successfully identified pre-eruption signals, they noted that data processing requires at least 10-15 minutes, sometimes leading to delayed alarms. They reported two instances of late warnings: one on June 11, 2019, and another on February 10, 2020. After a decade of monitoring jerk signals, the team evaluated alarm success rates for 22 out of 24 eruptions, achieving a positivity rate of 92%.

Prior to the introduction of jerk signals, many volcanologists struggled to predict the exact moment of an eruption. The research team concluded that, alongside traditional methods of detecting pre-eruption earthquakes, scientists can now effectively use jerk signals to alert authorities, thereby improving safety for communities living near volcanoes worldwide.

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Source: sciworthy.com

Uncovering Genetic Diversity: Surprising Insights into the Last Neanderthals

Posted on June 25, 2026 by Igor Mitreski

Unraveling Neanderthal Social Structure through Ancient DNA

Mauricio Anton/Science Photo Library

Recent findings indicate that the last surviving Neanderthals in northwestern Europe lived in genetically diverse and tightly-knit groups. This challenges the long-held belief that inbreeding was the primary driver behind their extinction approximately 40,000 years ago.

Despite the limitations in studying Neanderthal genetics (Homo neanderthalensis), due to the scarcity of well-preserved specimens, recent genomic analyses highlight that these ancient humans experienced periods of decreased diversity. However, the latest data suggests that inbreeding was not the foremost factor contributing to their decline.

Research led by Alba Bossams Mesa and his team at the Max Planck Institute for Evolutionary Anthropology, Leipzig, sequenced DNA from 27 Neanderthal remains sourced from diverse locations in Belgium and France, dating back as far as 52,500 to 40,000 years ago. Significantly, one genome revealed that a woman from Belgium’s Goyet Cave was cannibalized around 45,000 years ago.

“These newly analyzed genomes are crucial as they represent some of the youngest known Neanderthals, offering new perspectives on their genetic diversity during their extinction period,” explained Chris Stringer from the Natural History Museum, London.

Bossoms Mesa and his colleagues established that these 27 specimens belonged to at least 11 distinct Neanderthals. While overall diversity in Neanderthals was lower than that of modern humans, this group showed no substantial increase in detrimental genetic mutations or significant decreases in diversity.

In contrast to other Neanderthal populations, such as those in the Altai region of Siberia, which displayed evidence of inbreeding, Bossams-Mesa pointed out that these northwestern Neanderthals were closer to extinction yet displayed greater genetic diversity than their eastern counterparts.

The genetic findings also revealed that these Neanderthals were more closely related to each other than to late Neanderthal groups found further east in Croatia and southern Russia, splitting from a common ancestor approximately 54,000 years ago.

Neanderthal Excavations in Spy Cave, Belgium

P. Semal, Royal Belgian Institute of Natural Sciences, CC-BY 4.0

The broader implication suggests that the Altai Neanderthals may not accurately represent the entire species. Instead, the neanderthals from northwestern Europe belonged to a broader, interconnected population rather than a mere isolated group, says Bossams-Mesa. Different regional populations likely experienced varied life histories amid significant ecological and demographic shifts.

Modern humans made their entrance into Europe around 47,000 years ago, coexisting with this Neanderthal population for multiple generations. However, genomic evidence from these European Neanderthals reveals no interbreeding with modern humans, despite widespread indications of hybrids found elsewhere.

“This discrepancy raises intriguing questions about the interactions and power dynamics between Neanderthals and modern humans, which remain poorly understood,” noted Tarshika Vimala from UC Berkeley.

Bossoms Mesa posits various scenarios for this finding. Among them is the possibility that interbreeding predominantly occurred in different regions, such as the Levant, or that social dynamics or incompatibility with hybrids might have led to their nurturing primarily within human communities.

Stringer contemplates that the patterns of genetic exchanges into modern human populations reinforce the notion that late Neanderthals were losing reproductive capabilities, contributing to their eventual decline.

Perhaps it’s essential to rethink their status. “Even if remnants of their DNA exist in our genomes, Neanderthals haven’t truly vanished,” asserts Bossoms-Mesa.

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Source: www.newscientist.com

Exploring the Female Homo Naledi Skeletons: Insights and Discoveries

Posted on June 24, 2026 by Igor Mitreski

Homo naledi Skull

Peter Van Evert/Alamy

Homo naledi skull — Homo naledi Skull

Peter Van Evert/Alamy

The Homo naledi discovery in a South African cave over thirteen years ago has revealed astonishing insights. Recent analyses of skeletal proteins suggest all samples examined were female, providing potentially the most compelling evidence of early human behavior yet.

Uncovered by a group of cavers in 2013 within the Rising Star cave system, approximately 40 kilometers northwest of Johannesburg, the fossils were situated in deep, hard-to-reach chambers. Since their discovery, researchers have tirelessly investigated how these remains came to rest in such a location.

Initial hypotheses emerged in 2015, proposing that H. naledi corpses were intentionally placed in the cave, as suggested by Lee Berger from the University of the Witwatersrand. Archaeological findings indicated potential grave digging within the cave and the use of torches to navigate the darkness, with claims of ancient rock paintings left behind in this burial space. However, these ideas have been met with skepticism.

The latest findings by Palesa Madupe at the University of Copenhagen involved extracting ancient proteins from H. naledi tooth enamel, enabling insights into the genetics of this long-extinct species, believed to have lived between 335,000 and 236,000 years ago.

Tooth enamel comprises around a dozen proteins, relatively understudied in evolutionary terms. However, certain proteins can reveal biological sex due to the presence of amelogenin proteins linked to X and Y chromosomes, with females typically containing only the X-linked (amelogenin A) allele.

Madupe and her team examined all 23 known H. naledi specimens and successfully identified amelogenin proteins in 20, all of which were female—a startling outcome. Madupe expressed initial concerns about potential errors in their analysis, yet repeated tests yielded the same result, leading researchers to ponder the absence of male specimens.

One explanation could be the rapid degradation of AMELY proteins, making some undetectable. However, Madupe suggests this is unlikely, especially considering that similar proteins dating back two million years were recently discovered in South African excavations.

Lee Berger at the Rising Star Cave Entrance

Luca Sola/AFP via Getty Images

Another theory suggests that H. naledi males might not express AMELY genes on their enamel. Examining existing literature, researchers note that such deletions can occur in current human populations, though infrequently. They calculated the likelihood of AMELY absence among a random sample of 20 individuals, positing that the odds would be exceedingly low at just 0.0000954 percent.

This points to one intriguing conclusion: all 20 fossilized remains could have belonged to females. Berger argues this indicates that the notion of a natural process leading to their arrival in the cave is untenable. Instead, he posits that the findings imply intentional placement of female corpses within the cave.

Many researchers support this conclusion. For instance, Emma Pomeroy from Cambridge University remarked, “This suggests either flawed analytical methods or intentional choices regarding H. naledi individuals.” Similarly, Bernard Wood from George Washington University hypothesizes there might be behavioral reasons behind why female remains were deposited in the cave.

Others remain more skeptical. Researcher Kimberly Fecke from George Mason University suggests cave access may have historically posed challenges for larger individuals, thus affecting the representation of males in the fossil record. Notably, the initial archaeologists who explored the cave were predominantly women.

In contrast, Michael Petraglia at Griffith University advocates the idea that social dynamics among H. naledi could have led to populations with higher female-to-male ratios for foraging activities.

However, other experts, like Eric Kruvezy from the University of Toulouse, express reservations about this theory, noting that in primate groups with uneven male-to-female ratios, one typically finds a balance of male and female infants. This discrepancy brings into question the potential for a largely female demographic in the cave.

Berger maintains that these findings bolster his hypothesis that H. naledi corpses were purposefully placed in the cave. Other researchers challenge this notion, with Wood asserting that simply placing a body in a rock crevice shouldn’t be equated with burial rituals, denying the existence of complex cultural beliefs in early hominins regarding mortality.

Finally, the pivotal question remains: what did H. naledi look like? Wood notes that while physiological traits can be surmised from female specimens, significant variation might be expected, especially considering other hominin species like Paranthropus boisei, where males displayed larger cranial features.

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Source: www.newscientist.com

New Study Shows Domestic Cats Age Similarly to Humans: Key Insights Revealed

Posted on June 23, 2026 by Igor Mitreski

Domestic cats (Felis catus) exhibit brain atrophy and neurological decline patterns similar to those seen in aging humans, providing an excellent model for studying dementia and the aging process.

Januel et al. utilized 3,754 data points from age-related brain fluctuations and blood chemistry profiles to align human and cat ages throughout their lifespan. Image credits: Sci.News / Makieni777 / Rise-a-mui / Alexas_Fotos / Dorothe / Vaclav Zavada / Artem Makarov / Daga Roszkowska / Birgit / Pasi Mammela.

Cats have a relatively long lifespan, with evidence suggesting that their aging patterns may mirror those of humans.

According to AnAge, the maximum human lifespan (122.5 years) is nearly double that of great apes, such as chimpanzees (68 years).

Domestic cats can live up to a maximum of 30 years, significantly outliving their wild relatives, like the European wildcat (Felis silvestris), which averages around 19 years.

With an estimated 600 million cats globally, these findings emphasize the relevance of studying their aging processes.

“Given the longevity and abundance of domestic cats, we concentrated on interspecific age concordance between humans and cats, focusing on the aging process,” stated Christine Charbet and her team from Auburn University.

The research examined 3,754 data points derived from humans, cats, and other mammal species.

This data encompassed brain imaging, blood chemistry, disease markers, and behavioral milestones like eye opening and play initiation.

MRI scans revealed that cats and humans undergo comparable age-related changes in brain structure, including shrinkage and ventricular enlargement—changes typically associated with neurodegenerative conditions in both species.

“The similarities in age-related brain atrophy between cats and humans were surprising,” remarked PhD candidate Briar Rigby Dames from the University of Bath.

“These findings underscore the potential of companion animals to provide critical insights into the aging process.”

Instead of using basic age ratios, the researchers employed a complex biological model based on quantifiable age-related changes.

This method showed that aging in both species does not happen at a uniform rate; instead, it accelerates and decelerates at various life stages.

According to the model, late-life aging patterns align closely—80 years in humans equals approximately 15 years in cats. While not all animals reach old age equivalents in humans, domestic cats certainly do.

Dr. Ryan Gibson, a veterinary neurologist at Auburn University, added, “An increasing number of cat owners are seeking advanced brain imaging to identify illnesses in their pets, creating a unique avenue for studying aging animals alongside humans in real-world contexts.”

“This expanded clinical access opens valuable opportunities for translational research—bridging scientific knowledge with healthcare—to deepen our understanding of aging and neurological diseases that benefit both cats and humans.”

Rigby-Dames noted, “There is potential to establish extensive veterinary health databases for companion animals, akin to human health databases like the UK Biobank.”

“Such resources could significantly enhance our ability to investigate aging and diseases using real-world clinical and owner-reported data across species.”

These findings are published in the journal Biology Open.

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Capucine Januel et al. illustrate that cat brains age similarly to humans: Revealing that pet cats live long enough to serve as a natural model for human aging. Biology Open 15 (6): bio062604; doi: 10.1242/bio.062604

Source: www.sci.news

How Certain Brains Achieve Remarkable Stroke Recovery: Insights and Innovations

Posted on June 23, 2026 by Igor Mitreski

Scientists are speeding up stroke recovery

Craig Bolan

A renowned actor who experienced a stroke was treated by specialist Sander Nardai. The actor developed aphasia, which hindered their speech abilities. Nardai remarked, “It was likely the most tragic event for an actor.”

After three months, the actor could say a few words. Remarkably, a year later, he voiced a commercial and eventually returned to live theater. You can learn more about Nardai’s work at Semmelweis University, Hungary.

While there are inspiring recovery stories, many stroke survivors face significant challenges. A stroke can disrupt brain function, damaging cognitive and physical capabilities. Estimates suggest that only 35% of survivors achieve a full recovery, with the majority facing life-altering issues such as aphasia, paralysis, and cognitive changes. Stroke remains a primary cause of disability globally, impacting nearly 100 million people.

As illustrated in the actor’s recovery, the brain shows remarkable resilience and adaptability post-stroke. However, the extent of recovery varies among individuals. Ongoing research is uncovering the reasons behind this variability to improve treatments and support recovery for more patients.

Factors Influencing Brain Recovery After Stroke

A stroke occurs when blood supply to the brain is interrupted, either by a rupture or blockage. This deprives the brain of oxygen, leading to neuron death and impairing reasoning, movement, and communication. The body’s immune response can exacerbate the damage through inflammation.

Factors such as age, prior health, and stroke severity play significant roles in recovery. Neurologist Pankaj Sharma from Royal Holloway University notes that predicting recovery outcomes is complex due to numerous variables. Most individuals experience significant improvement within six months post-stroke, though some may deteriorate over time. Immediate treatment to dissolve blood clots can minimize long-term damage, while ongoing rehabilitation like speech and physical therapy may continue to yield benefits. Ultimately, the brain’s innate ability to heal remains a primary factor in recovery.

The recovery process is intricate, with surviving neurons capable of forming new connections. In the event of a stroke, “new pathways emerge, bypassing damage,” explains Sharma.

A theory suggests that different brain regions might take over functions lost due to damage, akin to colleagues covering for absent workers. Researcher Argye Hillis at Johns Hopkins School of Medicine comments on this concept. Yet, some studies, like a 2021 survey involving mice, found minimal evidence to support the “remapping” idea. Instead, rehabilitation might enhance the strength and capabilities of remaining neurons in the affected area.

Pre-stroke brain health significantly influences recovery, according to a recent study conducted by Celine Gillebert at the Brain Institute in Leuven, Belgium. The findings indicate that metrics such as brain volume can be strong predictors of post-stroke cognitive function, sometimes more so than the injury’s location.

Cognitively healthy individuals retain more intact brain function despite injury, while those with higher education levels may experience a more pronounced decline. A 2025 survey found that college-educated individuals exhibited greater declines in higher cognitive functions than non-degree holders .

Genetics also plays a crucial role. In a review, Sharma linked specific genetic variations, especially involving the APOE4 gene associated with Alzheimer’s onset, to poorer recovery outcomes after stroke. Yet, individuals with certain genetic profiles may demonstrate enhanced neural adaptability recovery, especially in specific populations.

Lack of blood flow to the brain significantly affects function.

Zephyr/Science Photo Library

Advancements in Stroke Treatment

Understanding the neural mechanisms in stroke survivors like the actor could pave the way for treatments that help level the recovery field. Nardai emphasizes the combination of a healthy brain pre-stroke, prompt treatment, and rehabilitation as critical factors in this actor’s successful recovery.

Researchers are investigating the significance of CCR5 mutations, which also seem to confer protection against HIV. Existing HIV treatments are being studied for their potential to replicate these natural advantages in stroke recovery. Early findings show promise.

Additionally, Naohiko Okabe and colleagues from UCLA recently identified a drug that appears to enhance outcomes in post-stroke rehabilitation in mice.

The research team observed that successful rehabilitation increased gamma oscillations, electrical signals aiding brain cell communication. They tested compounds that could replicate these benefits and found a gamma ray enhancer developed by researcher Istvan Mody could yield favorable post-stroke effects. The next step involves human trials, although Okabe cautions that success is not guaranteed. If effective, this drug could transform stroke treatment, particularly for patients lacking access to traditional rehabilitation services.

Another avenue of exploration includes enhancing the brain’s natural healing capabilities through the repurposing of commonly prescribed drugs. Antidepressants may enhance neurotransmitter availability, bolstering the brain’s adaptability. Anti-inflammatory medications are also being examined for their potential to mitigate stroke-related damage at the University of Manchester, UK.

Some innovative approaches are almost science fiction-like. Researchers from the University of Southern California and the University of Zurich recently published findings on stem cell injections for stroke treatment. Stem cells have shown potential in developing into mature neurons, repairing the blood-brain barrier, and reducing inflammation.

Brain-computer interfaces are gaining traction as well. In April, the German company CorTec received “Breakthrough Device Designation” for their brain-computer interface, designed to facilitate communication between the brain and external devices, enabling voluntary movement of paralyzed limbs. This technology not only aids functional recovery but also has the potential to promote brain rewiring through practice.

CorTec’s device helps patients regain movement in paralyzed limbs.

CorTec

Psychedelics are also a thrilling area of exploration. Researchers at Johns Hopkins University have begun human clinical trials with psilocybin, a compound in magic mushrooms, aiming to stimulate brain growth. Additionally, a recent study indicated that the psychedelic DMT might prevent cell death, promote brain rewiring, and fight inflammation post-stroke. Nardai envisions administering DMT en route to a hospital to mitigate damage, though further research is necessary.

While strokes can be devastating, the remarkable adaptability of the brain in certain recovery stories, like that of the actor, illustrates that hope remains. As we gain deeper insights into the mechanisms of recovery, the aspiration is to enable more individuals to reap the benefits of such advances.

Source: www.newscientist.com

What Happens When Two Narcissists Fall in Love? Insights and Consequences

Posted on June 20, 2026 by Igor Mitreski

Narcissists are known for their fragile self-esteem, hidden beneath layers of vanity and bravado. They constantly seek external reassurance to feel special.

This behavior typically manifests in two distinct ways. First, they display a penchant for bragging to affirm their importance and talent. Secondly, they often resort to belittling others when they perceive a threat to their status.

This combination of traits can create a highly combustible interaction between two narcissists, as neither can maintain the top position.

The fireworks don’t erupt immediately. Consider two high-profile narcissists who were once friends.

Initially, these narcissists might perceive mutual benefits from their relationship, each boasting about their unique attributes.

When both individuals accept each other’s claims at face value, they strengthen their sense of self-importance by associating with a seemingly successful and confident partner.

Narcissism is characterized by an exaggerated sense of self-importance, a constant need for admiration, an obsession with status, and a lack of empathy. Credit: Getty

The crux of the issue arises when one narcissist insults or undermines the other, leading to a downward spiral.

In psychological terms, this explanation aligns with the spin model—an abbreviation for “status seeking in narcissism.”

This model suggests that narcissists are preoccupied with status and often enhance their egos through boastfulness. However, when they feel threatened, they engage in a competitive strategy that involves degrading others.

Studies from the 1990s have shown that when narcissists believe they have been criticized, they are more likely to retaliate than non-narcissists.

Additionally, narcissists often prioritize their status over relationships, leading to intense competition when one feels challenged by the other.

Does this sound familiar?

This pattern is further supported by research. One study examined a group of narcissistic students and found that conflict escalates over time, increasing team discord.

Another couples study revealed that while narcissistic individuals may have a rosy start, longer relationships result in lower satisfaction.

If you have two narcissists in your life, the best strategy to avoid conflict may be to help each feel that their status is elevated rather than threatened by the other.

This article addresses the inquiry by Anna Olsen of Sunderland: “What happens when a narcissist encounters another narcissist?”

If you have any questions, feel free to email us at: questions@sciencefocus.com or reach out through our social media: Facebook, Twitter, or Instagram (please include your name and location).

Explore our ultimate fun facts for more incredible science insights.

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Source: www.sciencefocus.com

Timeless Science Insights: Why Carl Sagan’s ‘A World Possessed’ Remains Relevant Today

Posted on June 18, 2026 by Igor Mitreski

Exploring Carl Sagan’s “Demon-Haunted World”: A Timeless Perspective

Explore science news and in-depth articles on technology, health, and the environment in New Scientist magazine. — Exploring Carl Sagan’s “Demon-Haunted World”: A Timeless Perspective

Every few months, I encounter a powerful quote from Carl Sagan that resonates deeply. His phrase, “A world possessed by demons: science as a candle in the darkness”, has surged in popularity as it eerily captures our current struggles with misinformation and a decline in critical thinking. Sagan’s reflections on the America of the future were undeniably insightful, highlighting the dangers of a society increasingly consumed by misleading information.

Sagan wasn’t a prophet, yet he passionately advocated for the scientific method—evaluating claims based on evidence. To truly understand our future, it’s crucial to grasp the present and past, knowledge Sagan had in abundance. In A Demon-Haunted World, he elucidates the essence of the scientific method, emphasizing its application in everyday life, which is more vital now than ever as comprehension wanes in the face of overwhelming information.

While it was tempting to declare his magnum opus as Cosmos, an awe-inspiring tribute to the universe, A Demon-Haunted World stands as an essential read for aspiring critical thinkers. Sagan’s prose continues to inspire as readers often find themselves lost in his extraordinary articulation, questioning if they could ever create such remarkable work.

When astronaut John Glenn mistook a “firefly” for burning paint, Sagan insightfully noted, “The temptation of the wonderful dulls our vital faculties.” Even in this simple observation, he exhibits a profound sense of wonder!

Beneath Sagan’s elegant writing lies warmth and genuine admiration for the universe’s mysteries. Rather than debunking individuals, he scrutinizes ideas compassionately. In today’s highly polarized climate, it would be challenging for him to avoid turning A Demon-Haunted World into a manifesto. Yet, his humor and thoughtful approach offer a refreshing perspective. Regarding the pervasive issue of misinformation, Sagan expresses disappointment rather than anger, recognizing it as a systemic challenge that individuals can combat.

In an era where information is abundant, so too is misinformation. This reality underscores the relevance of Sagan’s work. While some of the scientific details may seem dated—having been published in 1995—the commitment to understanding the scientific process remains timeless. This book serves not merely as a catalog of scientific advancements but as a guide to critical thinking.

The scientific method transcends laboratory confines; it shapes how we assess the myriad ideas presented to us constantly. A Demon-Haunted World is a crucial reminder that diligent effort in seeking truth is invaluable. Sagan’s “baloney detection kit” presents practical tools for discerning fact from fallacy. While it doesn’t grant prophetic insight like Sagan’s, it certainly aids in understanding the complexities of our world.

Topic:

Source: www.newscientist.com

New Scientist’s Top Insights on the Future of Work: Expert Recommendations

Posted on June 18, 2026 by Igor Mitreski

Mr. O’Connor remarks on the historical shift of employers desiring machine-like attributes from their staff.

Yu Ruidong/China News Service/Getty Images

Sophia, the humanoid robot from Saudi Arabia, showcased at the Discovery Exhibition in Toronto, Ontario on April 30, 2018. (Photo credit: Yu Ruidong/China News Service/Visual China Group via Getty Images) — Mr. O’Connor remarks on the historical shift of employers desiring machine-like attributes from their staff.

Yu Ruidong/China News Service/Getty Images

We Are Not Machines

By Sarah O’Connor, published by Allen Lane (UK) and Godine (US, releasing August 11th)

Fans of translated films may have noticed a significant change in the quality of subtitles on streaming platforms. While they convey meaning, they often lack depth and richness.

“I grasp the meaning, but what about the nuance? The language feels flat,” Czech translator Petr Čermok shared with Sarah O’Connor. In We Are Not Machines, O’Connor discusses how artificial intelligence is reshaping our work environments.

This decline in linguistic richness typically stems from streaming services leveraging AI for script translations, which are subsequently refined by professional translators like Čermok. Unfortunately, agencies anticipate faster turnaround, often at the expense of translators’ compensation.

This evolving landscape complicates the job for translators, as they must simultaneously review both the original text and AI-generated translations, demanding greater effort, yet diminishing job satisfaction. “The work has become tedious, bland, and lifeless,” laments Čermok.

O’Connor, in her insightful book, reveals an emerging reality: we’re progressively adapting to an AI-centric future. The prevailing narrative suggests that AI will replace human translators, yet O’Connor argues, as highlighted by the Financial Times, that the lifeless translations represent our adaptations to an AI-driven era rather than a one-sided transformation.

“
“I feel as though we’ve lost faith in ourselves,” O’Connor wrote.
“

O’Connor’s key argument is not solely about the impending takeover of jobs by AI, but rather that we are already adjusting our behaviors to conform to AI standards. This ranges from accepting inferior products such as poorly translated scripts to striving to align our capabilities with workplace AI, all while often feeling inadequate. “It feels like we’ve somehow lost faith in ourselves,” writes O’Connor.

O’Connor’s book elucidates how this form of distortion impacts multiple industries, often to bewildering extents. There are stories of employers unable to recruit talented interns due to poor performance on AI-generated assessments or copywriters witnessing a drop in their articles’ search rankings because algorithms mistakenly categorize their work as AI-generated. In such scenarios, writers may need to employ a ‘humanizer’ tool to infuse their content with a more human touch, adding intentional grammatical and semantic errors. O’Connor questions if this is truly the future we aspire to—one that “damages and distorts the essence of our communication.”

Insights on AI’s implications are missing from tech executives; O’Connor specifically opts to center the narrative around employees outside Silicon Valley. She shares stories from individuals globally, from Swedish miners to operators of self-driving trucks in the United States.

O’Connor highlights a long-standing trend where employers desire mechanistic behaviors from employees. In 1911, management consultant Frederick Winslow Taylor implemented a system that stripped factory workers of autonomy by dictating how and when tasks should be completed.

However, AI has accelerated this shift. The book features a case study of Maria, a teleworker in Costa Rica, tasked with identifying missed items in Amazon recording videos. Over a nine-hour shift, she views around 1,200 ten-second clips, where her boss demands 99.9% accuracy with a limit of three mistakes across 8,000 videos. “They expect machine-like precision, which is simply unachievable,” Maria states.

Nonetheless, not everything revolves around downside; O’Connor recounts her visit to a Swedish mine where self-driving trucks have enhanced miners’ productivity and safety. Here, the presence of a robust trade union ensured that workers had a say in how AI would be integrated into their roles. Staff opposed real-time tracking of their movements, leading to anonymization for privacy.

“
“It’s not all bad – a visit to a Swedish mine revealed that autonomous trucks are making mining safer.”
“

Yet the struggle for justice remains complex. The book’s subtitle, “The Fight for the Future of Work,” often reads like intriguing feature stories rather than offering clear solutions. Perhaps, O’Connor suggests, the key lies in nurturing fundamental human values. “The real peril,” she asserts, “isn’t about creating machines in our image but subtly reshaping ourselves in theirs.”

O’Connor provides actionable recommendations for engaging in this struggle. Workers should get involved in how AI is implemented in their fields at the onset. For instance, Hollywood writers proactively discussed AI’s role in their work while still holding clout, contrasting with translators who were slower to resist. Collective efforts, such as joining unions, are also emphasized.

For a less serious reflection on AI, check out Joanna Stern’s book,
I Am Not a Robot
. Stern, a former technology columnist for the Wall Street Journal, narrates her year-long encounter with AI across various tasks, from dental care to cooking. While an insightful introduction to AI, it sometimes strays off course with humor that can undermine the seriousness of its themes, like AI’s environmental impact.

Interestingly, even after a year of AI incorporation into her life, Stern echoes O’Connor’s conclusion: we must collaborate with AI rather than fall under its authority. “The moment we let AI dominate our thoughts, we start to lose control and stagnate,” Stern warns. As we navigate this AI evolution, such insights remain critical.

Tom Knowles is a technology and business journalist based in London.

3 More Essential Reads on Artificial Intelligence

Code Dependent: Living in the Shadow of AI
Madhumita Murgia

The AI editors of the Financial Times delve into AI’s impact on sectors like policing, welfare, justice, and health, revealing life-altering consequences often resulting from systems we barely comprehend.

The Infinity Machine
Written by Sebastian Mallaby

In-depth biography of DeepMind, AI Company acquired by Google, detailing how AI can transform fields like chemistry and biology.

Empire of AI
Karen Hao

This engaging narrative tracks OpenAI’s shift from a principled nonprofit to a commercially driven powerhouse, emphasizing its competitive impact in the AI arena and the concerning trajectory it reveals.

If you purchase products through links on this page, you may receive a commission.

Topics:

Source: www.newscientist.com

Preventing Dementia: Latest Insights and Strategies | BBC Science Focus Magazine

Posted on June 18, 2026 by Igor Mitreski

Birds: Descendants of Dinosaurs

Discover the incredible birds that evolved from dinosaurs—prepare to be amazed by their fascinating lineage!

AI in American Healthcare: Approval and Denial

Explore how AI is shaping medical decisions in the U.S. and its impact on healthcare providers and patients.

The Future of Food Innovations

Learn how major food companies are adapting to the surge in weight loss medications and their implications for nutrition.

Can We Trust Our Memories?

Find out how the judicial system can enhance confidence in eyewitness accounts and the challenges involved.

Plus

Reviving Pluto as a Planet: NASA is advocating for Pluto’s reinstatement, sparking debate among scientists. What would it mean for our solar system?
Introducing Ferrari Luce: “When the invitation to the new electric Ferrari launch arrived, it felt significant. Luce’s importance was truly underestimated.” – Daniel Bennett shares insights in issue 434.
Expert Q&A: This month’s experts tackle intriguing questions: What’s the best pre-bedtime snack? Is outdoor defecation harmful to the environment? Is tongue rolling genetic? How can we address space debris? Does music taste correlate with intelligence? Can thyroid issues lead to narcissism? And much more…

Issue No. 434 Launch Date: Thursday, June 18, 2026

Remember, BBC Science Focus is also available across all major digital platforms! You can find our magazine on Android, Kindle Fire and Kindle e-readers, and our iOS app for iPads and iPhones.

Source: www.sciencefocus.com

New Insights into Europa’s Hidden Interior from Radar Observations

Posted on June 18, 2026 by Igor Mitreski

Astronomers at the University of California, Los Angeles, utilizing NASA’s Goldstone Solar System Radar and NSF’s Green Bank Telescope, have discovered that the icy surface of Jupiter’s moon Europa scatters radio energy in a remarkably strong and intricate manner, unlike any rocky planet observed to date.

Artist’s impression illustrating radar waves from NASA’s Goldstone Solar System Radar reaching Europa, penetrating its icy surface, and being collected by the NSF’s Green Bank Telescope on Earth. Image credit: NSF/AUI/NSF’s NRAO/P.Vosteen.

Jupiter’s Galilean moons—Europa, Ganymede, and Callisto—are of significant scientific interest due to their icy surfaces and the likelihood of subsurface oceans.

However, radar measurements of ice satellites have not been made since 1987 to 1991.

Radar observations are a powerful tool, as radio waves can penetrate pure ice to considerable depths, unveiling critical insights into the subsurface properties of these celestial bodies and their evolution.

“Radio waves penetrate the ice, providing vital information about its internal structure and purity, allowing radar to investigate deeper than what is visible on the surface,” said Tung-Hui (Tina) Shi, a graduate student at UCLA.

To bridge a longstanding research gap in radar studies, Xie and Professor Jean-Luc Margot conducted observations of Europa from 2011 to 2024 using both the Goldstone Solar System Radar and the Green Bank Telescope.

These groundbreaking observations revealed that Europa’s radar albedo (a measure of its brightness in radar terms) is significantly higher than that of typical planetary bodies and asteroids.

The returning radar signal exhibits the same circular polarization as the transmitted beam, indicating multiple scattering events within clean, porous ice.

These findings lend support to the coherent backscattering opposition effect, which intensifies radio wave echoes as they bounce around within the ice before returning to the telescope.

In a bistatic configuration, where the Goldstone radar transmits and both Goldstone and Green Bank telescopes receive, the researchers were able to investigate how the coherent backscatter effect changes with varying angles between the transmitter, moon, and receiver.

Notably, they discovered that Europa’s radar brightness remained nearly constant as the angle increased, suggesting that the vibrant backscatter “peak” extends beyond the sampled angle range, revealing a limit to how deep radio waves can diffuse before being absorbed.

This depth constraint enhances our understanding of Europa’s ice transparency, aiding scientists in interpreting future ice-penetrating radar data from spacecraft designed to explore the moon in greater detail.

“Future planetary science missions, such as NASA’s Europa Clipper, stand to gain immensely from this radar research,” said Dr. Will Armentrout, a research scientist at the NSF National Radio Astronomy Observatory supporting the radar initiative.

“As the radar technology at the Green Bank Telescope advances, we eagerly anticipate providing even greater radar capabilities to the scientific community.”

For further details, authors present their findings in the result at the 248th American Astronomical Society (AAS) General Meeting in Pasadena, California.

_____

Xie Tunhui and Jean-Luc Margot. 2026. European radar observations from 2011 to 2024: new insights into radar scattering characteristics. AAS248 Abstract #481

Source: www.sci.news

Pigeons Lock Their Gaze While Flying: Insights into Bird Vision and Flight Dynamics

Posted on June 17, 2026 by Igor Mitreski

Pigeons are Always Looking Forward

yod67/alamy

Pigeons in flight — Pigeons are Always Looking Forward

yod67/alamy

For the first time, scientists have tracked the eye movements of birds in flight, revealing that pigeons maintain a fixed gaze while soaring through the skies. This fascinating behavior could enhance their flight control while potentially increasing their vulnerability to predators.

Unlike terrestrial animals that utilize rapid head and eye movements, known as saccades, to stabilize their view, the mechanism behind avian vision during flight has remained elusive.

To investigate this further, Ivo Ross and researchers at the California Institute of Technology developed a lightweight mirror-and-camera rig that fits onto a typical pigeon’s head (Columba livia), along with a compact backpack housing the camera control board and battery.

Pigeon Equipped with Eye-Tracking Device

Andrew Biewener

The research team trained six pigeons indoors to fly between two perches spaced roughly 20 meters apart and an additional three pigeons for outdoor flight over a distance of 25 meters, returning to their coop.

During these test flights, head-mounted eye-tracking systems showcased that after takeoff, the pigeons enlarged their pupils and established a consistent eye position, effectively “locking” their gaze during flight.

“Upon takeoff, the eyes naturally rotate forward,” Ross comments.

Interestingly, the synchronization of head and eye movements indicates a linkage to the bird’s visual and vestibular systems, which are responsible for balance and spatial orientation.

The ability of pigeons to move their eyes independently with a maximum amplitude of about 15 degrees was documented. Graham Martin, a researcher at the University of Birmingham, UK, asserts, “Thus, the minimal eye movements—under 1 degree—during flight suggest birds actively stabilize their eye position.”

While the reason behind the pigeons’ fixed gaze remains unclear, Ross posits that it enhances balance and navigation by discerning their movements from external stimuli, such as passing trees or predators. Limiting eye movements may also reduce cognitive strain, particularly when flying, as the environment indeed shifts rapidly.

With a horizontal field of view of approximately 340 degrees, the implications of fixed eye positioning potentially create a blind spot behind, where predators might remain undetected.

The team’s tests were constrained to low-altitude flights, prompting Ross to ponder the eye behaviors of pigeons during different scenarios—such as high-altitude flights with fewer objects. He further questions their visual awareness in flocks, pondering: “Are they detecting other pigeons, predators, or distant threats?”

Martin suggests that other avian species, especially predatory birds, may also stabilize their eye positions while hunting. “When a peregrine falcon chases its prey,” he notes, “fixating its gaze would likely be essential for maintaining focus.”

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Source: www.newscientist.com

New Fossil Discoveries from China Illuminate Key Insights into Gigantopithecus Black History

Posted on June 16, 2026 by Igor Mitreski

Paleontologists have unearthed 13 fossilized teeth deep within a limestone cave in southern China, belonging to the species Gigantopithecus brachy, the largest known primate species in history. This groundbreaking discovery provides crucial insights into the species’ adaptability during significant climate changes between 1.2 million and 700,000 years ago, thereby filling important gaps in the fossil record.

Artist’s impression of a herd of Gigantopithecus brachy in the forests of southern China. Image credit: Garcia / Joannes-Boyau, Southern Cross University.

Gigantopithecus brachy was an extinct great ape inhabiting the jungles of Southeast Asia.

This impressive primate surpassed modern gorillas, standing up to 3 meters (10 feet) tall and weighing as much as 540 kg.

This species existed from approximately 2.3 million years ago until its extinction roughly between 295,000 and 215,000 years ago.

First described in 1935 by German-Dutch anthropologist Gustav von Königswald, the species was based on an isolated tooth discovered in a Hong Kong pharmacy.

The fossil record for Gigantopithecus brachy includes several thousand teeth and a limited number of jawbones.

“Gigantopithecus brachy is hypothesized to have been the largest primate species,” stated paleontologist Dr. Yanyang Yao from Shandong University, Nanning Normal University, and Guangxi Museum of Anthropology, alongside colleagues in China.

“Their fossil record primarily dates back to the Early Pleistocene and continues into the Middle Pleistocene, but material from the Early to Middle Pleistocene transition (1.2 million to 700,000 years ago) remains relatively rare.”

Yanli Dong, Chongzuo City, Guangxi Province, China. Image credit: Yao et al., doi: 10.16359/j.1000-3193/AAS.2026.0010.

Paleontologists successfully uncovered 13 teeth of Gigantopithecus brachy, including both upper and lower canines, premolars, and molars, at Yanli Cave 1 in Chongzuo City, Guangxi Province, China.

This significant find dates accurately to the Early Middle Pleistocene Transition (EMPT), a period characterized by cooler, drier climates and increasing glacial influence.

Estimated ages of the fossils are derived from associated animal fossils rather than direct dating of the teeth.

Researchers identified specimens from 30 species across six orders, including relatives of orangutans, tigers, clouded leopards, tapirs, Javan rhinos, stegodons, and Asian elephants.

Notably, two species in this assemblage provided valuable information for dating. The Airuropoda oolinshanensis represents a giant panda characteristic of the late Early Pleistocene, while Airuropoda melanoluca bakoni typifies a panda subspecies of the Middle Pleistocene.

The co-occurrence of both species strongly indicates that this deposit was formed during the transition between these two epochs.

“This faunal assemblage is indicative of the biostratigraphic age of EMPT,” the researchers stated.

The fossils of Gigantopithecus brachy found in Yanli Cave 1 appear to showcase ongoing evolutionary changes.

Some specimens exhibit the relatively small tooth sizes typical of early populations, while others approach the larger dimensions found in later populations, likely reflecting dietary adaptations.

“Comparative analyses of tooth dimensions of Gigantopithecus fossils from other sites indicated that some specimens from Yanli Cave 1 retain the smaller size characteristics prevalent in early Early Pleistocene populations,” the scientists noted.

“Conversely, other specimens approach the larger tooth sizes common in late Early Pleistocene populations and the extensive size ranges recorded in Middle Pleistocene populations.”

“These findings align with our biochronological assessments.”

“Following discoveries at Queque Cave and Zhanwang Cave, both located in nearby Chongzuo, Yanli Cave 1 represents the third significant EMPT site. This regional focus is likely to provide essential evidence for understanding dental evolutionary patterns and adaptive strategies in response to climate change during the EMPT.”

The survey results are published in the journal Chinese Anthropology Methods.

_____

Yanyang Yao et al. 2026. Discovery of Gigantopithecus brachy in Yanli Cave 1, Chongzuo City, Guangxi Zhuang Autonomous Region, during the transition period between the Early and Middle Pleistocene. Chinese Anthropology Methods 45 (02): 199-209; doi: 10.16359/j.1000-3193/AAS.2026.0010

Source: www.sci.news

Impact of Sucrose Removal on Gut Microbiome in Low-Fat Diets: Insights from Animal Study

Posted on June 15, 2026 by Igor Mitreski

In a groundbreaking mouse study by scientists at the Dasman Diabetes Research Institute in Kuwait, rodents following a sucrose-free diet exhibited insulin resistance, gut bacterial imbalances, and early signs of fatty liver disease, all while maintaining similar body weights.

Rashid Ahmad and Fatema Burman have found that a sucrose-free, low-fat diet drastically alters gut microbiota diversity, decreasing beneficial short-chain fatty acid-producing bacteria and increasing pro-inflammatory species like Helicobacter gammanii, Odoribacter splanchnicus, and Alistipes spp. Image credit: Lourdes Alvarez.

“The complete removal of sucrose from a low-fat diet can unexpectedly compromise gut health, triggering inflammation and metabolic issues,” stated Dr. Rashid Ahmad, the study’s lead author.

Dr. Ahmad and colleague Dr. Fatema Burman analyzed the impacts of a low-fat diet devoid of sucrose against a low-fat control diet for two groups of mice over 16 weeks.

Their assessments included glucose tolerance, insulin sensitivity, metabolic hormone levels, gut microbiota health, and inflammation in the colon and liver.

Mice on the sucrose-free diet experienced impaired glycemic control, increased insulin resistance, gut microbial imbalances, intestinal inflammation, and signs of fatty liver disease, despite comparable body weights to the control group.

“Our findings indicate that eliminating sucrose from a low-fat diet can negatively impact gut microbiota and overall metabolic health,” Dr. Ahmad remarked.

“This research underscores the critical nature of balanced carbohydrate intake for maintaining intestinal and immune system balance.”

The effects of restrictive diets that exclude sugar from low-fat meals have remained unclear until now.

“This study might reshape dietary guidelines to emphasize the importance of a healthy gut microbiome rather than just focusing on carbohydrate reduction,” Dr. Ahmad added.

“These insights could lead to enhanced strategies for preventing and managing metabolic disorders, fatty liver disease, and chronic inflammatory conditions.”

The authors presented their findings on June 13 at the Endo 2026 Endocrine Society Annual Meeting in Chicago, Illinois.

_____

Rashid Ahmad and Fatema Burman. Sucrose-free low-fat diet induces metabolic dysfunction through dysbiosis and colonic inflammation in mice. Endo 2026 abstract number ORF07-04

Source: www.sci.news

How Microbes Thrive When Glaciers Retreat – Insights from Sciworthy

Posted on June 15, 2026 by Igor Mitreski

As climate change alters our planet, glaciers are rapidly retreating, revealing new barren land. Over the coming decades and centuries, this rocky terrain will gradually develop into a thriving ecosystem, marked by lichens and shrubs—a phenomenon known as “new forest.”
Ecological inheritance.

Ecologists have meticulously mapped the stages of ecological succession, examining which plant species colonize these newly exposed lands and how they establish dominance.
Pioneer species lay the groundwork for secondary growth. Yet, before plants can take root, the soil is already teeming with a diverse community of single-celled microorganisms, preparing the ground for further colonization. Researchers study these microbial communities to better understand the formation of healthy ecosystems.

Newly exposed land often suffers from poor nutrient levels and extreme temperature fluctuations, making it essential for initial colonizing species to overcome these obstacles. Pioneering plant species are
habitat generalists, meaning they thrive in various environmental conditions. Furthermore, while all plants convert sunlight and water into carbon and energy, microorganisms can utilize diverse energy sources and often possess genes for multiple metabolic pathways. This led scientists to wonder whether pioneer microorganisms could also be characterized by their
metabolic flexibility.

A research team from Monash University in Australia tested this hypothesis by studying areas exposed after the retreat of two glaciers: one on an island near Antarctica and another in the Swiss Alps. The researchers examined soil samples exposed to air for varying durations, tracing different ecological stages following the glaciers’ retreat.

The scientists extracted DNA from these soil samples and employed two sequencing methods. First, they sequenced a specific gene,
16S rRNA, serving as a unique identifier for the diverse microbial species present. This method enabled them to assess community diversity, track species overlap, and identify habitat generalists thriving in different soil conditions.

To explore the metabolic flexibility of these microorganisms, the team employed a second approach known as
metagenomics, which sequences all DNA within a sample, rather than just one gene. This technique allowed them to reconstruct full genomes of the microorganisms and gather insights on their metabolic capabilities. They also analyzed soil chemicals, including ammonium and sulfide, alongside atmospheric gases like methane and carbon monoxide, to evaluate how microbes utilized these elements for growth.

Findings revealed that even the most nascent soils harbor microorganisms, illustrating the speed at which life can inhabit new environments. Microbial abundance surged approximately eight-fold in older soils, and species diversity also increased. This signifies the persistence of complex communities over time. Interestingly, the metabolic functions of microorganisms in glacial soils from Antarctica and Switzerland were remarkably similar, suggesting that common selective pressures facilitated the establishment of these new ecosystems.

Researchers were surprised to find that the most prevalent microorganisms in younger soils were actually habitat specialists, rare in older soils. These pioneering microbes, although metabolically flexible, optimally utilize trace atmospheric gases like hydrogen, methane, and carbon monoxide. Many of these organisms may also derive energy from chemicals leached from rocks, such as inorganic sulfur compounds. The researchers posited that pioneer microbes rapidly exploit newly created ecological niches, like soil exposed by retreating glaciers, due to their proficiency in using scarce resources.

Conversely, habitat generalists often dominate in older soils, indicating that in a real-world tortoise-and-hare scenario, habitat specialists are eventually outcompeted by the slower-growing habitat generalists.

The research team concluded that employing varied growth strategies enables microorganisms to adapt effectively to new environments. However, they acknowledged that ecological transitions may differ across landscapes affected by volcanic eruptions, meteorite impacts, and forest fires. They recommend that future studies focus on how microbial communities contribute to these dynamic ecosystems.

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Source: sciworthy.com

Unraveling Mysterious Signals from the Galaxy: New Insights for Decoding Extraterrestrial Messages

Posted on June 14, 2026 by Igor Mitreski

In recent years, astronomers have been intrigued by a series of mysterious radio signals originating from the Milky Way. Approximately 12 of these long-period radio transients (LPT) have been detected across various regions of the galaxy.

Currently, scientists at the University of Sydney have made significant progress in understanding one of these signals. A study published in Nature Astronomy, led by Covey Rose, suggests that the signal originates from an anomalous star system they’ve dubbed the “Star Rosetta Stone.” This discovery could be pivotal in unraveling the nature of these enigmatic signals.

The newly identified system, known as ASKAP J1745-5051, consists of a white dwarf—a dense stellar remnant comparable in size to Earth, yet possessing a mass similar to that of the Sun—and a larger but lower-mass red dwarf star, roughly one-tenth the mass of the Sun. These two stars are in a close orbit, completing a full revolution in just over one hour.

Interactions between the magnetic fields of the stars generate radio bursts at specific points in their orbits, resulting in signals that occur at consistent intervals.

“This system serves as a vital tool for deciphering these signals. It may help us determine whether other long-period transients are related to pulsars or white dwarf systems acting as stellar Rosetta Stones,” Rose stated, referencing the archaeological artifact that aided in translating ancient Egyptian hieroglyphs.

The two stars engage in magnetic and gravitational interactions – Credit: Carl Knox (OzGrav/Swinburne) and Dr. Joshua Preston Pritchard (CSIRO)

In addition to radio signals, materials from the less massive star are drawn toward the white dwarf, heating it and resulting in the emission of X-rays.

This groundbreaking discovery provides a unique chance to study the magnetic interactions between stars and explore extreme plasma physics under conditions that cannot be replicated on Earth.

“These systems are natural laboratories,” Rose emphasized. “They enable us to test our understanding of how matter behaves in the presence of intense magnetic and gravitational forces.”

Dr. Darren Baskill, an expert on cataclysmic systems from the School of Physics and Astronomy at the University of Sussex, commended the research, stating, “They provided excellent observations and explanations for these long-period radio transients.”

However, he cautioned, “While the source of these radio waves appears to be identified, many questions about the physics of cataclysmic stars still remain.”

Read more:

Source: www.sciencefocus.com

Unlocking Beer Brewing Techniques: Insights from Beer Foam

Posted on June 12, 2026 by Igor Mitreski

Every glass of beer deserves a frothy head, created by the carbon dioxide bubbles that rise to the surface. This essential foam not only enhances the visual appeal but also affects the overall drinking experience.

Unlike the foam seen in other carbonated drinks, beer foam is unique due to its protein coating, forming a protective film that prolongs its lifespan.

<p>These proteins originate from the malted grains utilized during the brewing process.</p>
<p>Recent <a href="https://pubs.aip.org/aip/pof/article/37/8/082139/3360405/The-hidden-subtlety-of-beer-foam-stability-A" target="_blank" rel="noreferrer noopener">research</a> indicates that proteins found in long-fermented beers, particularly Belgian ales, excel at stabilizing foam, resulting in a longer-lasting head.</p>
<p>Beers with elevated protein content, such as wheat beers, tend to exhibit thicker and more durable foam. Cheers to that!</p>
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<p><em>This article addresses the inquiry from Stan Parker of Plymouth: <strong>Why do some beer bubbles last so long?</strong></em></p>
<p><strong>For any questions, feel free to email us at:</strong> <strong>questions@sciencefocus.com</strong> or reach out via <a href="https://www.facebook.com/sciencefocus/?locale=en_GB" target="_blank" rel="noreferrer noopener"><strong>Facebook</strong></a>, <a href="https://twitter.com/sciencefocus?lang=en" target="_blank" rel="noreferrer noopener"><strong>Twitter</strong></a>, <strong>or</strong> <a href="https://www.instagram.com/bbcsciencefocus/" target="_blank" rel="noreferrer noopener"><strong>Instagram</strong></a> <strong>(please include your name and location).</strong></p>
<p><strong>Check out our ultimate</strong> <strong><a href="link-to-fun-facts-page">fun facts</a></strong> <strong>for more amazing science insights!</strong></p>
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<p><strong>Read more:</strong></p>

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Source: www.sciencefocus.com

Steve Brusatte’s Insights on Bird Evolution: New Scientist’s Top Recommendation

Posted on June 11, 2026 by Igor Mitreski

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Artist’s Impression of Archeopteryx

JA Chirinos/Science Photo Library

Artist's Impression of Archeopteryx - A Prehistoric Feathered Reptile — Artist’s Impression of Archeopteryx

JA Chirinos/Science Photo Library

Bird Story
By Steve Brusatte Picador (UK); Mariner Books (US)

Steve Brusatte excels in paleontology with his compelling book, Bird Story, which follows his acclaimed works, The Rise and Fall of Dinosaurs and The Rise and Reign of Mammals. This new release combines rigorous scientific insight with an engaging narrative style, making it a must-read for enthusiasts of avian evolution.

Brusatte is a prominent paleontologist at the University of Edinburgh, specializing in a wide array of dinosaur, bird, and mammal fossils. He conducts excavations on the Isle of Skye in Scotland, known for its well-preserved Jurassic remains. Brusatte is also a notable science communicator, reaching audiences through his films as well as his engaging books.

Artist’s Impression of Compsognathus

Florilegius/Alamy

Bird Story, subtitled The Evolutionary History of Dinosaurs Living Among Us, meticulously details the journey of birds from their dinosaur ancestors, showcasing their evolutionary adaptations and current status as a thriving animal group.

“
The dramatic discovery of Archaeopteryx bolstered Huxley’s case that birds evolved from dinosaurs
“

Brusatte’s narrative traces back to 1868, when Thomas Henry Huxley first proposed the connection between birds and dinosaurs. This idea was vital in supporting Darwin’s theory of evolution by natural selection, as outlined in On the Origin of Species. Huxley’s groundbreaking work redefined how these two groups of organisms were understood in the broader context of evolutionary biology.

Artist’s Impression of Falcatakely

Mark P. Witton/Science Photo Library

Birds have always puzzled scientists due to their unique characteristics like feathers, wings, and bipedal posture. Brusatte emphasizes Huxley’s contributions, correlating bird features with their dinosaur relatives, especially notable species like Compsognathus, which exhibited striking similarities.

The significant discovery of Archaeopteryx revealed not only its feathered wings but also its teeth and claws, reinforcing the evolutionary connection between birds and dinosaurs. Brusatte underscores that modern birds belong to the dinosaur lineage, providing insights into how they survived mass extinction events that decimated their dinosaur cousins.

Through analysis of the fossil record, Brusatte elaborates on the evolution of feathers and flight capabilities in ancient birds during the Mesozoic era. He vividly illustrates the diversity of avian species, with groups like the enantiornithids thriving before the catastrophic events of the past, detailing the survival mechanisms of certain bird lineages.

In the latter half of Bird Story, Brusatte transitions to present-day birds, exploring their significant diversification in response to ecological niches vacated by extinct species. He examines contemporary avian groups such as penguins and songbirds alongside extinct marvels, enhancing the narrative’s depth.

As a writer immersed in paleontology, many concepts within Bird Story felt familiar, but Brusatte’s exploration of Zealandia, the submerged eighth continent, brought fresh perspectives. He suggests that Zealandia historically hosted dinosaurs long into the present due to its isolation from large mammals.

Concluding the book, Brusatte’s collaboration with neuroscientists Pavel Němek and Kristina Kverková sheds light on avian intelligence. Despite their small brain sizes, many birds exhibit extraordinary cognitive abilities, underscoring the complexity of avian minds.

Bird Story stands as a remarkable addition to the literature on avian evolution, further fueling anticipation for Brusatte’s future works, including his upcoming book on the history of reptiles.

Michael Marshall, a science writer based in Devon, UK.

Impact of Lithium Mining on Local Water Sources – Insights from Sciworthy

Posted on June 8, 2026 by Igor Mitreski

Electric vehicles and various clean energy technologies are powered by metal-based batteries known as
lithium
. The rising demand for lithium has turned lithium mining into a booming industry. This vital resource is predominantly found in volcanic formations called
pegmatite
. Ongoing research aims to determine the carbon and water consumption in pegmatite mining, but the impact on local water quality remains uncertain.

Mining pegmatites not only yields lithium but also other trace metals like rubidium and cesium. While the environmental effects and potential human toxicity of these trace metals are not well documented, the EPA has associated elevated lithium levels with detrimental health risks, including kidney dysfunction, impaired neurodevelopment, and thyroid issues. Currently, no safe threshold for lithium in drinking water has been established, although the
United States Geological Survey
suggests a preliminary safe level of 10 micrograms per liter (μg/L).

Researchers at Duke University recently investigated how pegmatite mining affects lithium concentrations in nearby water sources and the duration of these effects post-mining. Their study involved measuring metal concentrations in water downstream of two lithium mines and a connected processing plant. The researchers hypothesized that mining activities could alter the interactions between the rock and surrounding water, thereby influencing lithium levels.

The team collected 99 water samples from surface streams and 93 samples from groundwater wells in a 40-kilometer (25-mile) stretch along the South Carolina-North Carolina border, particularly near the Kings Mountain and Holman Beam lithium mines. They compared 51 surface water samples collected upstream of the mines to 48 samples taken downstream that were influenced by mining activities.

Using an
inductively coupled plasma mass spectrometer
, the researchers measured lithium alongside trace elements such as rubidium, cesium, arsenic, and strontium. Their findings revealed that lithium concentrations in surface water skyrocketed from baseline levels of 0.2 μg/L to between 785 and 1,249 μg/L within 10 kilometers (6.2 miles) of mines. Groundwater wells showed lithium levels between 4,500 and 47,000 μg/L in mining areas, contrasted with unaffected downstream wells measuring between 0.5 and 890 μg/L.

The research suggested that the lithium found in groundwater downstream was primarily due to natural interactions between pegmatite rocks and water rather than direct mining activities. This was evidenced by rising lithium levels in groundwater following rainfall, which intensified water-rock interactions.

Moreover, the team analyzed ions such as calcium, sulfate, and chloride using an
ion chromatograph
. They observed spikes in calcium and sulfate concentrations in surface waters within 10 kilometers downstream of the processing facility, measuring 50 to 120 milligrams per liter (mg/L) of calcium and 100 to 300 mg/L of sulfate. In comparison, background surface waters contained only 5 to 20 mg/L of calcium and 3 to 10 mg/L of sulfate. These ions are by-products of pegmatite processing and arise from waste composed of calcium sulfate or
plaster
.

The researchers highlighted that active mining ceased at this site around three decades ago, and the lithium levels documented reflect a long-term release from dormant mining operations and waste. Historical data indicates that during its active years, the mine may have discharged 10 to 30 times more trace metals than currently recorded.

Ultimately, the researchers concluded that processing pegmatite has a more significant impact on downstream metal and ion concentrations than mining activities themselves. As lithium mining expands, further research is essential to explore lithium toxicity and the implications of co-occurring metals like rubidium and cesium. There is also a pressing need to develop strategies to mitigate trace metals and dissolved gypsum from infiltrating water systems.

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Source: sciworthy.com

Jupiter’s Electron Acceleration Near-Light Speed: Key Insights into Cosmic Ray Origins

Posted on June 6, 2026 by Igor Mitreski

Recent analysis of data from NASA’s Juno spacecraft reveals that Jupiter’s bow shocks not only deflect the solar wind but also serve as potent particle accelerators, propelling electrons to relativistic energies of at least 1 MeV.

As celestial bodies traverse streams of charged particles, their magnetic fields act as barriers. This interaction results in incoming particles being slowed and redirected, creating a ‘bow shock.’ Just beyond this boundary lies the foreshock, a dynamic area where magnetic forces can accelerate particles to speeds approaching that of light. Image credit: Ben C. Smith, Johns Hopkins Applied Physics Laboratory.

A shock is a disturbance caused by an object moving faster than the local speed of sound through a medium, leading to a sudden change in pressure at the interface.

Jupiter’s bow shock, for instance, arises where the planet’s magnetic field interacts with the solar wind, similar to how a ship’s bow creates waves in the water.

Most shocks in space plasma are collisionless due to low particle density, which prevents direct collisions and energy transfer through heat. Instead, electromagnetic forces govern these interactions.

Collisionless shocks are believed to be key sites where cosmic rays are accelerated to near-light speeds in a process termed relativistic electron acceleration.

Despite this understanding, scientists have faced challenges in directly observing and confirming the mechanisms behind these structures.

“Since the discovery of cosmic rays over a century ago, astronomers have been tracing their origins,” stated Dr. Savas Raptis from Johns Hopkins University Applied Physics Laboratory and his colleagues.

“These high-energy particles originate from various sources, including supernovae and solar eruptions.”

“When solar cosmic rays interact with Earth, they can induce space weather impacts that disrupt satellites, communications, and electricity grids.”

“The NASA mission illustrated how some electrons attain high energy levels in regions near Earth known as foreshocks, where solar particles first encounter Earth’s magnetic field.”

“Scientists have long suspected that this same acceleration process occurs in the foreshocks of other planetary bodies and astrophysical systems, but confirmation has been elusive until now.”

The research team analyzed data gathered by Juno during its approach to Jupiter on October 1, 2023.

Before passing through the bow shock, Juno traversed a foreshock, a turbulent area where the solar wind initially senses the planet’s magnetic field.

Over approximately 20 minutes, Juno detected a significant bubble-like disturbance identified as a foreshock transient.

The spacecraft employed three onboard instruments to measure electrons accelerated to energies reaching up to 1 MeV within this transient structure.

“By utilizing these observations and supplementary data from our solar system, we propose a universal scaling law for the Hyras limit, empirically linking the size of observable transients to maximum particle energy,” the authors concluded.

“Applying this model across diverse environments, from planetary bow shocks to protostellar jets and supernova remnants, suggests a range for maximum achievable particle energies from the MeV scale to tens of GeV and TeV, offering a method for constraining maximum cosmic ray energies in astrophysical shocks.”

The team’s paper was published in the journal Nature on June 3, 2026.

_____

S. Raptis et al. 2026. Relativistic electron acceleration in Jupiter’s bow shock and beyond. Nature 654, 47-51; doi: 10.1038/s41586-026-10473-z

Source: www.sci.news

Exploring the Ship of Theseus Paradox: Insights from Its Wikipedia Page

Posted on June 4, 2026 by Igor Mitreski

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Your Feedback is Valuable to New Scientist. We welcome insights or articles of interest to our audience. Please email us at feedback@newscientist.com.

A Ship is Coming In

We asked our readers, and you delivered. In our recent feedback request, we sought the most fitting adjective for the Wikipedia page discussing the Ship of Theseus paradox. To clarify, this philosophical puzzle explores whether an object remains the same when all its components are replaced. Interestingly, the Wikipedia page itself has undergone extensive editing, making it a prime example of the very paradox it describes.

In our mailbag, you’ll find a wide array of suggestions, including Tim Molesley’s “automatic paradigm” and Bryn Glover’s “automatic causes.”

Among the standout contributions was Martin Baston, who drew inspiration from the British sitcom Only Fools and Horses. In the show, the character Trigger receives a medal for maintaining the same broom for 20 years, albeit with 17 new heads and 14 new handles. Thus, Martin proposed describing the Ship of Theseus Wiki page as a “trigger.”

However, the prevailing consensus labels it “self-logical.” Peter Jeffrey, Peter Gutfreund, and others pointed out that an autological word expresses a characteristic it possesses. For example, “noun” is a noun, and “sesquipedalian” refers to a sesquipedalian.

Yet, there is a debate about whether “autological” can refer to entire articles. Philip Penton humorously suggested, “If you need another term for your article, consider ‘autobloomian.’”

Mairi McKissock also contributed valuable insights. She uncovered the opposite of autological—“foreignness,” a term that fails to describe itself. For instance, the word “monosyllabic” is inherently polysyllabic. This led Mairi to examine another intriguing paradox, the Grelling-Nelson paradox. “Is the word ‘alien’ foreign? If so, it proves itself to be autological. If not, it fails to do so and thus becomes foreign,” she posited.

Now that the feedback is yielding more questions than answers, let’s change direction and explore another segment of the mailbox.

Discovering Niche Markets

The conversation surrounding niche science-themed tourism continues steadily. Criteria for winning include parks adorned with foraminiferal sculptures or gardens exclusively made of moss.

Andrew Taubman, a volunteer at the Australian Museum, reported significant progress in digitizing their extensive entomology collection. He recently aided in the digitization of the Lamprogaster genus, which oddly lacks a dedicated Wikipedia page, showcasing how obscure these insects truly are. Similarly, Rosalinda Hardiman’s collection of handpicked beach pebbles, gathered during her years of open water swimming, is not publicly available. She seeks feedback on whether to exhibit them, and the response is a resounding yes.

In Australia, Sari Somerstrom introduced us to the Puseum in Richmond, Tasmania, which specializes in animal waste. Their website claims to be “the only facility of its kind in Australia”. According to Sari, the book is “not only interesting but packed with fascinating facts.” However, concerns arise about its niche appeal, given the universal nature of defecation.

Turning to John Blakey, he highlighted two hidden gems. The first is a Gas Museum in Hobro, Denmark, dedicated to the intriguing history of gas production and distribution. Though John hasn’t visited yet, he considers it a must-see.

Yet, John’s second recommendation truly stands out: Kornets Hus, or “House of Grain,” located in northern Jutland. This venue celebrates all things corn and grains, set in a dedicated center amid a cornfield. “It’s so obscure; no one has left a review on TripAdvisor,” John remarked, although there is a separate page for the museum café, which had a handful of reviews as of mid-May.

Precious Chihuahua

While I usually refrain from quoting feedback directly, this particular insight comes from renowned author Janet Winterson of Oranges Are Not the Only Fruit. While browsing Apple News, she noted the amusing use of dogs as a unit of measurement. A recent article mentioned a “giant 11,000-carat ruby worth millions,” likening its weight to that of a dog.

To highlight the absurdity of this comparison, an English Mastiff can weigh over 100 kg, while a Chihuahua might only weigh about 1 kg. Such comparisons invite confusion, much like stating that a building’s height lies somewhere between two stories and the Burj Khalifa. Further information reveals that this gemstone weighs around 2.2 kg, a weight consistent with a Chihuahua.

Have a Story for Feedback?

Please send your submissions to Feedback at feedback@newscientist.com, and include your home address. Weekly and past feedback can be accessed on our website.

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Why Eyelash Trimming for Men is Surging in Popularity: Insights from Ophthalmologists

Posted on June 4, 2026 by Igor Mitreski

Are you considering trimming your eyelashes? This question may sound unusual, but it relates to a growing social media trend.

Reports from various countries indicate that some men are cutting their eyelashes in the belief that it enhances their masculinity.

While long, fluttering eyelashes are often associated with femininity, some alpha males seek to reaffirm their masculinity by altering their appearance and showcasing it on social media.

Did you know the average person has 90 to 160 eyelashes on the upper eyelid and 75 to 80 on the lower eyelid? – Image courtesy of Getty Images

This trend not only seems perplexing to me but also to eye care professionals. Trimming eyelashes typically involves using scissors or clippers dangerously close to the eyes.

Many find videos of this process uncomfortable to watch, pointing out that this trend is often more about creating controversial content rather than genuine practice.

Experts warn that a single mishap during trimming can result in significant harm to your cornea or the tear film, which is essential for keeping the eyes moistened.

Even if you’re cautious, the chances of exposing your eyes to unnecessary risks are high. Eyelashes play a crucial role in safeguarding our eyes.

They act as the last line of defense against dust, sand, and harmful UV rays. Just like lions and silverback gorillas, humans have evolved to have this natural protection.

Interestingly, the length and thickness of eyelashes are influenced by genetics, not gender. The stereotype that women have longer eyelashes while men have shorter ones is rooted in cultural perceptions rather than scientific fact.

Ultimately, trimming your eyelashes could lead to dry eyes, increased discomfort, a higher risk of infection, and the ridicule that may follow.

This article addresses the question posed by Frankie Bond: “Should I trim my eyelashes?”

If you have any questions, feel free to email us at: questions@sciencefocus.com or reach out Facebook, Twitter, or Instagram (include your name and location).

Explore our ultimate fun facts and more incredible science pages!

Read more:

Why can I hear my heart beating in my pillow?
What is the best way to end a relationship?
What actually makes a person cool?

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Are You Eating Fiber at the Wrong Times? Insights from a Harvard Doctor

Posted on June 3, 2026 by Igor Mitreski

Unless you’re a lentil-loving vegetarian who enjoys bean burgers over beef, your body is likely craving the essential fiber it needs.

This is true for 95% of adults in England and the US. As a result, many miss out on the roughage essential for keeping gut microbes happy, immune systems strong, stools soft, and hearts healthy.

However, incorporating fiber into every meal—including fruits, vegetables, whole grains, beans, and legumes—can feel overwhelming, especially if you’re used to a low-fiber diet.

If you’re looking to increase your fiber intake, breakfast is an excellent place to begin. This meal is often considered the “most important meal of the day” because what you consume in the morning sets the stage for the day ahead.

Starting your day with a fiber-rich breakfast not only simplifies your fiber consumption but also enhances the overall effectiveness of your nutrient intake. Here’s why:

Prepare for the Day

Research indicates that your breakfast choices can significantly influence your lunch, dinner, and snack selections throughout the day.

In fact, Australian research revealed that adults who consumed a high-fiber breakfast were more likely to make healthier, fiber-rich food choices for the remainder of the day compared to those who skipped breakfast or opted for lower-fiber options.

A nutritious breakfast sets the foundation for a productive day – Image courtesy of Getty Images

“Eating a balanced breakfast facilitates healthier eating for the rest of the day,” states Dr. Emily Leeming, a nutritionist at King’s College London. “It’s intuitive: breakfast prepares you for the day ahead.”

This is because fiber isn’t directly digested like many nutrients (e.g., carbohydrates, proteins, and fats). Instead, it traverses the intestines, nourishing the beneficial microorganisms in the colon.

Moreover, as fiber moves through your digestive system, it helps you feel fuller. It increases the bulk of food, slows gastric emptying, and activates stomach muscles, sending more satiety signals to the brain.

The nutrients consumed also influence how energy is extracted from food. When carbohydrates are paired with fiber, sugar enters the bloodstream more gradually, stabilizing blood sugar and energy levels.

This ultimately impacts our appetite. Research conducted in 2021 showed that meals with higher dietary fiber lead to lower hunger levels and calorie intake throughout the day.

Research consistently indicates that a healthy gut benefits overall body function – Image credit: Getty Images

A similar trend is observed even when blood sugar levels are not assessed. Studies show that after consuming a fiber-rich breakfast—such as porridge or whole wheat bread—individuals report feeling fuller compared to alternative meals with lower fiber content but the same caloric value.

Thus, a healthy breakfast doesn’t only influence your morning; it creates lasting effects throughout the day.

Read more:

Ease Digestive Health

Still unsure? There’s more good news. The fiber in your breakfast can also facilitate a healthy bowel movement in the morning.

This remains true regardless of when you consume it.

According to Harvard Gastroenterologist Dr. Trisha Pasricha, author of You’re Doing Poop All Wrong, one of the best ways to improve bowel health is by increasing fiber intake. “A softer, easier, and less strained bowel movement signifies that you are meeting your fiber goals.”

Fiber also helps support the gut’s natural circadian rhythm, providing particular benefits in the morning.

Dr. Pasricha explains that during sleep, your colon is relatively inactive. When you awaken, environmental cues activate the colon. “The first couple of hours after waking is when your colon is most active,” she notes.

Morning awareness activates bowel function – Image credit: Getty Images

This activity includes subtle contractions that push waste toward expulsion. A nutritious, fiber-filled breakfast can stimulate this natural process, leading to satisfying bowel movements without straining.

“The quality of your morning bowel movement can greatly influence your entire day,” Dr. Pasricha asserts. “I stand by this belief.”

Research supports this, with 153 adults reporting improved gut health in just two weeks after consuming a high-fiber wheat bran breakfast; participants noted increased energy, reduced bloating, and fewer sluggish feelings due to the addition of just 5.4 grams of fiber.

Reach Your Fiber Goals

Transitioning to a high-fiber breakfast is not only effective but also quite manageable.

Unlike lunch and dinner, we often repeat the same breakfast daily, making simple swaps impactful for overall dietary changes.

“Breakfast is a crucial opportunity to replenish your fiber intake,” Leeming emphasizes. “Skipping breakfast makes it difficult to meet your fiber needs.”

That said, it’s essential not to focus solely on breakfast. Both adults in England and the US consume just over half of the recommended 30 grams (1 oz) of fiber daily.

Many breakfast staples like fruits, oats, and whole grain toast are naturally high in fiber – Image courtesy of Getty Images

In this challenging scenario, breakfast alone is unlikely to resolve the issue. Leeming cautions that dramatically increasing fiber intake at breakfast without moderating lunch or dinner consumption may not be ideal for digestion.

“Your gut needs time to acclimate to fiber, so it’s best to spread your intake throughout the day,” she explains. “This acts like rocket fuel for your gut microbiome; spreading it out reduces unpleasant symptoms.”

To minimize bloating and discomfort, introducing more fiber gradually is key. Remember, every small increment helps.

“Even adding a mere 7 grams of fiber daily can significantly reduce your risks of heart disease, colon cancer, and type 2 diabetes,” she adds.

Since many breakfast foods are inherently high in fiber, it might be easier to prioritize your morning meal first.

For instance, swap cornflakes for whole-grain cereals, or replace white toast with seeded rye bread. Alternatively, enhance your porridge, overnight oats, Greek yogurt, or kefir with fiber-rich toppings like nut butters, seeds, and berries.

Consuming these modifications daily can greatly improve your health.

Read more:

Source: www.sciencefocus.com

Neil deGrasse Tyson Discusses New Book, Alien Life on Earth, and Wormholes: Insights from the Renowned Astrophysicist

Posted on May 31, 2026 by Igor Mitreski

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‘I Have a Dream’ Co-Screenwriter Dr. Clarence B. Jones Dies at 95

02:04
Are Movie Theaters Back? Will They Survive?

04:49
Spurs Defeat Reigning Champion Thunder

00:38

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Unusual Behavior When Disconnecting Photons: Insights and Solutions

Posted on May 30, 2026 by Igor Mitreski

Cutting Photons: A Fascinating Paradox

Muhammad Fawaid/Alamy

In Greek mythology, cutting off one head of Lerna’s Hydra only leads to two more growing in its place. A similar paradox occurs in the quantum world with photons: attempting to “cut” a particle of light generates an infinite number of new light particles.

Some particles are classified as elementary, meaning they cannot be divided into smaller constituents. For example, although a proton can be split into three quarks, each quark remains indivisible. But what occurs when one attempts to divide elementary particles?

Johannes Skaar, a professor at the University of Oslo, Norway, examines the phenomenon of a photon interacting with a mirror capable of this type of cutting.

Light, fundamentally a quantum entity, consists of photons or can be viewed as an electromagnetic wave. Thus, photons aren’t entirely localized like solid objects; they have extensions, or “tails,” across space. In this scenario, if the mirror moves rapidly enough, it can reflect some photons, effectively “trimming” the photon’s tail.

Leveraging quantum equations governing electromagnetic fields, researchers concluded that this truncation results in a unique quantum light state—one that is a superposition of infinitely many photons. In the quantum realm, empty space is teeming with fluctuating quantum fields, such as electromagnetic fields. By manipulating these fields, mirrors can excite these fluctuations, permitting the emergence of new particles.

“Rapidly altering mirrors or shutters disturbs the vacuum, conjuring photons from the void,” explains Samuel Brownstein from the University of York, UK. However, local observations reveal that this superposition state appears indistinguishable from a single photon on one side of the mirror and a vacuum on the other. This demonstrates how the concept of observation varies drastically in the quantum realm compared to our daily experiences, illustrating that “a highly complex object can seem utterly simple” in quantum theory.

Wolf Leonhardt from the Weizmann Institute of Science, Israel, has conducted experiments confirming that utilizing a sufficiently fast shutter in vacuum does indeed generate photons. However, practical experimentation of this new concept may pose challenges. Although advancements in ultrafast light manipulation are emerging, the shutters described in the study exceed current laboratory capabilities. Leonhardt emphasizes the necessity for further exploration into quantum vacuum phenomena, which could refine or alter the existing quantum field theory of electromagnetism.

Alongside addressing the locality issues in quantum theory, which relate to broader inquiries regarding causality in quantum particle experiments, Skaar and his team aim to expand their focus to include multiple photons and electrons simultaneously.

Topics:

Source: www.newscientist.com

490-Million-Year-Old Arthropod Fossil Reveals Critical Insights into Evolutionary Gaps in the Fossil Record

Posted on May 29, 2026 by Igor Mitreski

A newly discovered species of Corcoranidae arthropod, identified as Magnicornaspis garwoodi, lived during the Furonian period, approximately 497 to 487 million years ago. This well-preserved specimen was unearthed near Quebec, Canada, and provides significant evidence that the Frondian gap—the evolutionary interval between the Cambrian explosion and the Ordovician Great Biodiversity Event—may reflect sampling bias rather than a genuine decline in biodiversity.

Magnicornaspis garwoodi. Image credit: Thomas Turner.” width=”580″ height=”385″ srcset=”https://cdn.sci.news/images/2026/05/image_14805_1-Magnicornaspis-garwoodi.jpg 580w, https://cdn.sci.news/images/2026/05/image_14805_1-Magnicornaspis-garwoodi-300×199.jpg 300w, https://cdn.sci.news/images/2026/05/image_14805_1-Magnicornaspis-garwoodi-84×55.jpg 84w” sizes=”(max-width: 580px) 100vw, 580px”/>

Reconstruction of Magnicornaspis garwoodi. Image credit: Thomas Turner.

Dr. Russell Bicknell from Flinders University noted, “Paleontologists suggest this notable biodiversity decline might be tied to changes in ocean chemistry, a cooling climate, or environmental instability.” He emphasized that “perhaps we’ve overlooked the right sedimentary rocks or fossil-bearing deposits to fully understand the types of mollusks and early forms of life that existed during this period.”

The newly identified Magnicornaspis garwoodi arthropod is distinguished by its broad head shield, segmented body, and defensive spines, and is classified within the Corcoraceae group.

This remarkable specimen was found in the Rivière du Loup Formation near Quebec, Canada, making it one of the few known fossils from the Cambrian and Ordovician periods.

Magnicornaspis garwoodi. Image credit: Bicknell et al., doi: 10.1186/s12915-026-02617-4.” width=”580″ height=”384″ srcset=”https://cdn.sci.news/images/2026/05/image_14805_2-Magnicornaspis-garwoodi.jpg 580w, https://cdn.sci.news/images/2026/05/image_14805_2-Magnicornaspis-garwoodi-300×199.jpg 300w, https://cdn.sci.news/images/2026/05/image_14805_2-Magnicornaspis-garwoodi-84×55.jpg 84w” sizes=”(max-width: 580px) 100vw, 580px”/>

Magnicornaspis garwoodi. Image credit: Bicknell et al., doi: 10.1186/s12915-026-02617-4.

“Fossils play a crucial role in bridging gaps in our understanding of evolutionary history,” Bicknell and his colleagues stated.

“An increasing number of Furonian sites challenge the notion of a barren Late Cambrian world.” They highlighted that “with each new Furonian fossil find, the estimated gap narrows, revealing a more sophisticated ecosystem that thrived during the Late Cambrian.”

“These discoveries hint that Furonian ecosystems were both diverse and ecologically complex,” they added.

Importantly, these specimens come from a geological environment previously unrecognized for its exceptional preservation quality.

The discovery of Magnicornaspis garwoodi fits into a broader pattern of findings over the last two decades.

Dr. Julian Kimmig from Karlsruhe University of Technology and the Karlsruhe National Museum of Nature remarked, “The Frondian gap may not indicate a true biodiversity collapse, but rather a result of where scientific focus has been and the types of rocks studied.”

The discovery of Magnicornaspis garwoodi is detailed in a research paper published in BMC Biology.

_____

RDC Bicknell et al. 2026. A new, well-preserved arthropod discovered in the Furonian of Canada. BMC Biology 24, 119; doi: 10.1186/s12915-026-02617-4

Source: www.sci.news

How Plants Alter Magma Chemistry: Insights from Sciworthy

Posted on May 27, 2026 by Igor Mitreski

Approximately 400 million years ago, vascular land plants emerged with a groundbreaking venous system for transporting water and nutrients. This development significantly altered our planet’s geological and chemical landscape. Following this, remarkable changes were noted in the chemical composition of rocks derived from magma across various continents. While geologists propose that these magmatic changes were global phenomena, some argue that the data may reflect geographical sampling biases. Recently, a cutting-edge research team sought to determine whether these magma transformations were indeed global or confined to specific mountain ranges or volcanic islands.

Geologists analyze the chemistry of magmatic rocks to unravel Earth’s history. They focus on specific minerals known as
zircon
, which forms as magma cools and retains essential chemical clues about its origin and interactions. To assess whether magma changes were global or localized, researchers needed data that spanned from the equator to the poles. Since Earth’s continents have shifted over the past 400 million years, scientists relied on the latitude where the rocks were formed, a method known as
paleolatitude
, to compare ancient Earth samples from various locations. The team utilized publicly available chemical data from zircons found in magmatic rocks across diverse
paleolatitudes
.

Scientists identify isotopes as chemical elements with the same number of protons but differing neutron counts. To assess how plants influenced magmatic processes, researchers analyzed two distinct isotopic signals embedded in the zircon. The first signal originates from the ratio of heavy to light oxygen isotopes, which rises as sediments blend into magma. This measure is denoted as
δ
¹⁸
O
, pronounced “delta-18-O.”

The second isotopic signal involves the element
hafnium
, represented as Hf. Geologists utilize hafnium isotopes to approximate when magma melted and differentiated from the mantle. Zircon contains two Hf isotopes—one stable and the other generated through radioactive decay. Given that this decay transpires over billions of years, the ratio of the two Hf isotopes shifts slightly over time, which geologists express using the notation
εHf
, pronounced “epsilon hafnium.” This notation indicates how much the Hf signature of magma diverged from the original mantle composition. Lower εHf values signify magma incorporating older crustal materials, whereas higher εHf values reflect a mantle source.

The researchers observed that δ
¹⁸
O values in the zircons increased as εHf values decreased. This trend indicates a significant rise in land-derived sediment within magma, a response to the evolution of land plants. The implication is that terrestrial plants transformed ancient landscapes, drastically altering sediment weathering and transportation processes across the land.

To further scrutinize this pattern, the research team concentrated on the Andes Mountains, a region abundant in preserved magmatic activity throughout history. They accessed a comprehensive database for isotopic data on zircon samples collected in the Andes by various research teams. These samples encompass 32 degrees of modern-day latitude and 520 million years of Earth’s geological history, offering vital insights into how magmatic chemistry transformed over time.

Their findings indicated no correlation between εHf and δ
¹⁸
O values for zircons older than 450 million years. However, for those younger than this threshold, researchers identified a trend: as εHf decreased, δ
¹⁸
O values increased. This pattern emerged in magma formed along continental edges, particularly in regions where one tectonic plate subducts beneath another, known as a
subduction zone
. Similar patterns were noted in magmas formed inland during the breakup of the Pangea supercontinent about 200 million years ago.

The research team found analogous results in publicly available zircon isotope data from igneous rocks in diverse regions including China, the Caribbean, Antarctica, Madagascar, and Tasmania. Zircons from these areas exhibited similar relationships to those from the Andes. To further investigate ancient climate influences on magma chemistry, the researchers compared the ratio of εHf to δ
¹⁸
O, expressed as εHf/δ
¹⁸
O, alongside paleolatitude. They found no significant association between paleolatitude and εHf/δ
¹⁸
O.

With these insights, researchers concluded that the relationship between εHf and δ
¹⁸
O evolved on a global scale following the emergence of vascular land plants. They posited that as these plants spread across continents, their root systems accelerated the breakdown of rocks, a process that increased weathering and sediment movement into ocean basins, ultimately impacting magma chemistry deep within the Earth’s mantle. This sequence of events demonstrates how biological processes on Earth’s surface can induce profound changes deep within the planet.

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Source: sciworthy.com

Southern California Chemical Tank Scandal: Key Insights and Unanswered Questions

Posted on May 26, 2026 by Igor Mitreski

A serious incident occurred at a chemical storage tank in Garden Grove, California, where overheating caused by a malfunctioning valve raised alarms about a potential disaster. This event poses risks of toxic plume exposure for residents and potential damage to nearby structures.

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Since Thursday, Southern California officials have united with state and federal agencies to prevent what could be one of the gravest chemical accidents in California’s history. A state of emergency was declared, leading to the evacuation of thousands of residents in this city southeast of Los Angeles, with an uncertain timeline for their return.

By Monday evening, the threat of a boiling liquid expanding vapor explosion (BLEVE) was successfully averted, according to Orange County fire officials.

Here’s an essential overview of the situation.

What is Methyl Methacrylate?

The incident centers around a storage tank at the GKN Aerospace Facility, holding approximately 7,000 gallons of methyl methacrylate.

Methyl methacrylate is a toxic substance utilized in the production of resins and plastics like plexiglass.

Exposure to this chemical may cause skin and eye irritation, along with symptoms such as coughing, dizziness, headaches, and respiratory issues.

What Were the Risks?

Last week, the Orange County Fire Department reported the tank was heating up and expanding.

This scenario presented two dire outcomes: either the tank develops a crack leading to chemical leakage, or it ruptures and explodes, posing risks to nearby methyl methacrylate tanks.

Fire Chief Craig Covey, the incident commander, highlighted the severity of the situation: “What we were told indicated a potential leaking or exploding tank.”

Fire officials resolved the BLEVE risk by Monday morning, a condition where the temperature of a flammable liquid in the tank increases to the point of catastrophic explosion.

Andrew Welton, a Purdue University engineering professor, likened the risk to leaving a soda can in a hot car—high pressure leads to explosive potential.

On Monday, officials confirmed that a crack allowed pressure to escape, although no chemicals leaked, and the internal temperature was decreasing. Firefighters used sprinklers and hoses to cool the tank.

Initially, around 60,000 residents were evacuated due to their safety concerns; by Monday evening, this was reduced to approximately 16,000.

Why Did the Tank Overheat?

Authorities reported a faulty valve in the tank’s cooling system initiated a dangerous sequence of events.

“The overheating was due to a valve freeze within the recirculating cooling system, which was supposed to maintain a target temperature of 50 degrees,” Chief Covey explained.

This malfunction led to a significant heating of the tank contents.

Mayor Stephanie Klopfenstein assured residents of a transparent investigation into the incident on Monday night.

Has the Risk Been Eliminated?

The temperature peaked at at least 100 degrees Fahrenheit, while the boiling point of methyl methacrylate is around 212 degrees. By Monday, temperatures decreased to 93 degrees.

Welton noted the cooling trend is promising; it indicates no ongoing heat generation within the tank.

Despite this, risks of a minor explosion or chemical spill remain due to uncertainties regarding the chemical’s state within the tank. Some specialists suggest solidification might be occurring.

“If solidification occurs, the threat diminishes significantly,” Welton mentioned.

By Monday, cooler temperatures and solidified materials signaled good news for emergency responders.

Orange County Interim Fire Chief TJ McGovern remarked that while the threat of a major explosion has subsided, additional precautions are still necessary.

He emphasized the need to address potential fire hazards, minor explosions, or chemical spills.

Do You Have Environmental Concerns?

Chris Myers from the Environmental Protection Agency stated that extensive air monitoring revealed no hazardous exceedances during the incident.

According to Welton, the crack in the tank could theoretically allow for some vapor or gas escape.

In response to the incident, President Trump approved a presidential emergency declaration to allocate more resources, including personnel and equipment from FEMA. Governor Gavin Newsom also declared a state of emergency in Orange County.

FEMA has teams assisting in state emergency operations, and air monitoring has been established at 20 locations around the affected area.

The Orange County District Attorney’s Office has initiated an investigation, while two local residents have filed a class-action lawsuit against GKN Aerospace, the facility’s owner.

In an official comment, a GKN Aerospace spokesperson referred to their online statement, conveying their collaboration with fire officials to stabilize the tank.

“We safely removed the tank’s external insulation to assist in cooling its contents,” they stated. “We regret the disruption this incident has caused and are focused on ensuring a safe resolution so residents can return home.”

Covey reported that a nearby tank was neutralized with a chemical compound, although a similar approach was not viable for the threatening tank due to a malfunctioning valve.

Judith Enck, former EPA official, remarked on the necessity of regulatory inspections: “When was the last inspection of this tank, and what were the findings?”

Experts like Welton suggest investigating the maintenance frequency and possible clogging within the tank.

“We hope this incident remains a major alert rather than leading to uncontrolled chemical release or structural damage,” he concluded. “This remains a situation to monitor closely.”

Source: www.nbcnews.com

Exploring Oliver Sacks’s ‘The Man Who Mistook His Wife for a Hat’: Insights After Recent Revelations

Posted on May 20, 2026 by Igor Mitreski

Exploring the Revelations Surrounding Oliver Sacks’ The Man Who Mistook His Wife for a Hat

Often, popular science books become dated as new research debunks their key theories or presents outdated concepts. Sometimes, however, explosive revelations transform the narrative entirely.

In the case of Oliver Sacks, it’s the latter with The Man Who Mistook His Wife for a Hat. This groundbreaking work has influenced countless psychology students and researchers, including myself. Yet, its reputation has been shaken by startling disclosures about Sacks’ commitment to factual accuracy. Is there anything redeemable amidst the wreckage?

I first read The Man Who Mistook His Wife for a Hat—referred to as hat here—around 25 years ago as an undergraduate psychology student. It’s a collection of case studies featuring individuals with neuropsychiatric conditions, primarily drawn from Sacks’ own patients. He immerses readers into the lives of those battling memory loss, neurosyphilis, Tourette syndrome, and more, examining not just their challenges in daily life but the neurological foundations of their conditions and their implications for understanding the human mind.

On a recent reread, I noticed some elements that raise concerns. Originally published in 1985, the book includes language that is no longer acceptable, particularly concerning individuals with developmental delays. Moreover, Sacks occasionally reflects on the profound meanings his patients derive from their cognitive challenges.

Yet overall, revisiting it reminded me of the compelling storytelling that captivated me initially. Sacks is often viewed as the empathetic “grandpa” of psychology, which explains why this book resonates with so many.

In Chapter 3, “The Disembodied Woman,” Sacks recounts the story of “Christina,” a woman who suffered severe neurological damage and lost her sense of proprioception—the awareness of one’s body in space. For Christina, even actions as simple as riding the bus became Herculean tasks, as her awkward movements led others to mistakenly assume she was intoxicated.

By sharing these narratives, Sacks advocates for greater societal acceptance of individuals who have experienced brain injuries or who possess atypical neurological wiring. Although he never employs the contemporary term “neurodiversity,” the idea is very much present in hat.

The central issue with this book lies in its veracity; one cannot ascertain the authenticity of many accounts. Investigative journalist Rachel Aviv gained access to Sacks’ correspondence and personal diary through the Oliver Sacks Foundation, revealing Sacks’ “guilt” over “my lies” and “falsifications.” hat.

Aviv has uncovered that several stories within the book may be at least partially fabricated. For instance, Sacks narrates a patient named Rebecca, depicted as unable to “confidently open a door with a key,” yet flourishing in a theater company, a transformation unsupported by evidence in Sacks’ records. Similarly, he describes identical twins with severe disabilities allegedly capable of identifying six-digit prime numbers, an extraordinary claim unverified by any other source.

In conclusion, it remains ambiguous how much of hat can be trusted. Most case studies go unpublished in scientific journals, leaving no room for independent validation. What we have are the words of Oliver Sacks; however, his diary confesses to deception. While I hesitate to endorse remarkable claims like the twins’ prime number identification, many narratives—such as that of Christina—align better with verified accounts.

Aviv’s investigation highlights that Sacks grappled with his internal struggles. He didn’t publicly embrace his identity as a gay man until later in life and lived with feelings of guilt and self-loathing due to societal homophobia, a struggle that deeply impacted both his personal life and professional work. This narrative is profoundly tragic and underscores the intersections of identity and mental health.

The most significant concern is that hat Sacks presented this work as nonfiction, yet its most remarkable achievement lies within the realm of fiction: transporting readers into the minds of those whose experiences and perceptions diverge dramatically from the norm. While it may not serve as a reliable source of neuropsychiatric facts, approaching it with this understanding reveals enduring truths.

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Source: www.newscientist.com

The Mystery Behind Tyrannosaurus Rex’s Tiny Arms: New Insights Revealed

Posted on May 20, 2026 by Igor Mitreski

Paleontologists from University College London and the University of Cambridge have unveiled that the small arms of large predatory dinosaurs evolved in tandem with their massive heads and powerful bone-crushing jaws. This evolutionary shift indicates that ancient predators increasingly relied on biting rather than grasping their prey.

Reconstruction of Tyrannosaurus macraiensis. Image credit: Sergey Krasovskiy.

“While everyone recognizes Tyrannosaurus rex, other giant theropod dinosaurs also featured small arms, indicating a trend towards reduced forelimb size,” stated Charlie Roger Scherer, a PhD student at University College London.

“For instance, Carnotaurus showcases surprisingly small arms, even in comparison to Tyrannosaurus rex.”

“We aimed to understand the driving factors behind this evolution and discovered a strong correlation between shorter arms and the development of larger, more robust heads.”

In their comprehensive study, Scherer and colleagues analyzed data from 82 species of carnivorous theropod dinosaurs.

They determined that reductions in forelimb size occurred across five key lineages: abelisaurids, carcharodontosaurids, ceratosaurids, megalosaurids, and tyrannosaurids.

The evidence suggests that smaller arms are directly linked to the evolution of a larger, more powerful skull and jaw, rather than simply being a consequence of overall body size increases.

The researchers propose that the increased size of prey, including giant sauropods and other large herbivores, may have driven theropods to rely more on their jaws and heads instead of their claws for hunting.

This shift in attack strategy highlights the evolutionary principle of “use it or lose it,” as the arms gradually became less useful and diminished in size.

“While our study illustrates a correlation, we cannot definitively establish causation; however, it strongly suggests that theropods developed more solidly built skulls in conjunction with shorter forelimbs,” Scherer explained.

“It is unlikely that these predators would have abandoned their effective methods of attack without developing alternatives.”

Ecosystem reconstruction of the Late Jurassic Dry Mesa dinosaur quarry, roughly 150 million years ago in Colorado, USA. Image credit: Sergey Krasovskiy / Pedro Salas.

For their research, the paleontologists developed a novel method to quantify skull robustness, evaluating factors such as bone connectivity, skull dimensions (with compact shapes being superior in strength), and bite force.

Among the species studied, Tyrannosaurus rex achieved the highest score for skull robustness, followed closely by Tyrannotitan, another significant theropod that existed in present-day Argentina over 30 million years ago during the Early Cretaceous period.

“The enormous size of prey may have instigated an evolutionary arms race, prompting theropods to evolve more powerful skulls and jaws to subdue increasingly gigantic prey,” the researchers concluded.

Read their full paper, published today in Proceedings of the Royal Society B.

_____

Charlie Roger Scherer et al. 2026. Driving forces and mechanisms of convergent forelimb reduction in non-avian theropod dinosaurs. Proc Biol Sci 293 (2071): 20260528;doi: 10.1098/rspb.2026.0528

Source: www.sci.news

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What is Methyl Methacrylate?

What Were the Risks?

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Has the Risk Been Eliminated?

Do You Have Environmental Concerns?