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Dark matter is one of the biggest unsolved mysteries in modern physics. Astronomers are highly confident that it exists and estimate that it accounts for about a quarter of the universe’s total energy content, yet scientists still do not know what it is made of. Two leading possibilities are hypothetical…
Unretouched triangular microlithic projectile points have been identified from their impact traces in the oldest occupation layers of the Obi-Rakhmat site in Uzbekistan, dating to 80,000 years ago. Their size corresponds to small arrowheads, which are directly comparable to those produced by Homo sapiens during an incursion into Neanderthal territory…
The European Society of Cardiology has issued its first guidelines dedicated to managing cardiovascular disease alongside chronic kidney disease, developed in partnership with the European Renal Association. The recommendations were published in the European Heart Journal and presented at ESC Congress 2026. Chronic kidney disease (CKD) is diagnosed when abnormalities…
Scientists at the Pontificia Universidad Católica del Ecuador have formally described Pristimantis milpe, a common and widespread frog that spent more than a century being mistaken for another species. The mystery was resolved by studying specimens collected in Ecuador during the 19th century and preserved at the Natural History Museum…
Researchers at the Kennedy Institute have found evidence that some joints may be more vulnerable to inflammatory arthritis before birth. The discovery could help explain a long-standing puzzle in rheumatoid arthritis: why the disease repeatedly attacks certain joints while leaving others largely untouched. The study, “The embryonic origins of site-specific…
Excess fat stored inside skeletal muscle has become an important metabolic health concern. This type of fat buildup can be encouraged by high-fat diets, physical inactivity, and aging. Unlike fat stored under the skin, lipid droplets that accumulate within muscle cells can interfere with normal muscle function and make it…
All known life on Earth relies on the same four-letter genetic alphabet. Researchers at the University of California San Diego have now shown that one of biology’s most important enzymes can accurately read and transcribe a much larger version containing eight genetic letters. The finding suggests that cells can use…
A study published in Nature Communications has revealed an unusual form of quantum oscillation in a three-dimensional topological insulator. The findings show that electrons in zirconium pentatelluride (ZrTe5) can behave in unexpected ways when exposed to temperatures close to absolute zero and extremely powerful magnetic fields. The research was led…
A new study of bonnethead sharks (Sphyrna tiburo) in Florida is challenging a previous explanation for how males and females develop their distinctively different head shapes. Researchers from the University of Miami Rosenstiel School of Marine, Atmospheric, and Earth Science and collaborating institutions found that the sharks’ shovel shaped heads…
Knitting is no longer limited to making familiar items such as sweaters, hats, and blankets. Researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have shown that conventional knitting techniques can be used to create functional fabrics capable of changing shape, sensing movement, and operating…
Aging often makes itself visible in familiar ways, from gray hair and wrinkles to lapses in memory. That has fueled a longstanding scientific question: Could some of those changes eventually be slowed, prevented, or even reversed? Research involving a group of scientists from Xi’an Jiaotong-Liverpool University, Stanford University, Shanghai Jiao…
Puerto Rico typically enters its wet season in May, but 2026 has unfolded very differently. By late August, rainfall had remained scarce across much of the U.S. territory, allowing drought conditions to spread rapidly. The lack of rain has contributed to water shortages and rationing in some communities, prompting Puerto…
MIT researchers have engineered bacteria to work like transistors, creating living “circuit boards” that can be printed onto growth material inside a Petri dish. In conventional electronics, transistors act as switches that control whether electrical current can pass through a circuit. In the MIT system, engineered bacterial cells perform a…
A new study suggests that deliberately changing the rhythm of your breathing can influence how you make decisions by altering activity in both the heart and brain. Researchers from the German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE) and Charité — Universitätsmedizin Berlin found that longer exhalations increased heart rate variability…
Summer is the busiest time of year for iceberg activity in Greenland’s glacier-fed fjords, and 2026 delivered a particularly dramatic example. In August, a huge iceberg broke away from Petermann Glacier on Greenland’s northwest coast. About the size of St. Thomas in the U.S. Virgin Islands, it marked the largest…
Astronomers have identified a little-studied population of faint remnant radio galaxies that appear to fade quickly after their central supermassive black holes stop producing powerful radio jets. The findings provide a closer look at what happens during the final stages of a radio galaxy’s evolution. Researchers from the University of…
For nearly a century, scientists have been trying to identify dark matter, the invisible material thought to account for about 85% of all matter in the universe. Its gravitational effects can be seen throughout the cosmos, yet no experiment has directly detected the substance itself. Discovering what dark matter is…
Before birth, the human brain is assembled through an enormous series of cellular choices. At the center of this process are radial glia, a special type of stem cell that helps create many of the features that distinguish the human brain. These cells produce large numbers of the neurons and…
Biomedical engineers at Duke University have created an injectable biomaterial that may help the brain recover from damage left behind by an ischemic stroke. In experiments with mice, the material transformed the cavity created by lost brain tissue into a more favorable environment for healing. The treatment recruited the body’s…
Scientists have identified a remarkable new species of leafless flowering plant growing on the forest floor of a national park in western Thailand. Its unusual, almost supernatural appearance inspired its name: Thismia daemona, the “devil flower.” The plant belongs to Thismia, a genus of tiny species sometimes known as “fairy…
Plants facing both a warming climate and rapidly declining pollinator populations may be pulled in competing evolutionary directions. A University of Michigan study suggests that, instead of adapting primarily to climate pressures, some plants may be evolving traits that help them attract pollinators. In morning glories, researchers found that the…
Researchers at the University of Oxford have found evidence that Mars may once have contained enormous Earth-like magmatic systems deep below its surface, even though the planet does not have the plate tectonics that scientists have long associated with this level of geological complexity. The findings, published in Nature Astronomy,…
At first glance, stromatolites and their close relatives, microbial mats, can look like little more than dark, ancient rocks. In reality, they are densely packed, layered communities built by microbes. Billions of years ago, before animals and plants existed, stromatolites helped release some of the earliest oxygen into Earth’s atmosphere.…
NASA’s Hubble Space Telescope has spotted a striking new feature in Saturn’s atmosphere: a huge, evolving 10-sided wave circling the planet’s south pole. It is the first time scientists have observed a large, regularly shaped jet pattern in Saturn’s southern hemisphere. The structure has some similarities to Saturn’s famous hexagon…
Carnegie Mellon University researchers have identified an unusual magnetic response that overturns a long-standing assumption about the Hall effect, a foundational principle used to study how materials behave electrically and magnetically. The findings, published in Nature Materials, expand scientists’ understanding of the Hall effect and could eventually support simpler and…
Scientists have long been intrigued by a question surrounding bats: how can these flying mammals carry viruses capable of causing severe disease while rarely becoming seriously ill themselves? Researchers at Tulane University, working with collaborators at Stanford University and the Centers for Disease Control and Prevention, may now have identified…
Aging happens at different speeds from one person to another, but it eventually affects everyone. New research from Stanford Medicine, conducted in mice and human cells, points to a particular failure in the immune system that may help explain why. The researchers found that tissue-resident macrophages, a type of immune…
The universe is producing fewer stellar “babies.” Over the past 4.5 billion years, the rate at which new stars form has fallen to less than half its previous level. Yet the supply of one of the most important types of “fuel” for star formation has changed surprisingly little. That finding…
September brings a busy lineup for skywatchers, including a dazzling Venus, a Harvest Moon near Saturn and Neptune, the seasonal equinox, and opportunities to use the Moon as a guide to some recognizable stars and Milky Way features. September Skywatching Highlights Sept. 14-20: Follow the Moon to Antares and the…
When John Glenn orbited Earth in 1962, he commented on a striking green valley northwest of El Paso, Texas, surrounded by an otherwise dry landscape. That contrast is largely the result of human-made lakes along the Rio Grande, which have made farming possible in the arid region. Irrigation supports crops…