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New research suggests that the characteristics of children and teenagers receiving attention deficit/hyperactivity disorder (ADHD) or autism spectrum disorder (ASD) diagnoses have shifted over the past decade. The study, led by the Barcelona Institute for Global Health (ISGlobal), a centre supported by the “la Caixa” Foundation, and Aarhus University, found…
Sometimes what we see does not immediately make sense. A shadow can briefly resemble a face, or one object can momentarily be mistaken for another. New research suggests that the brain may resolve these visual conflicts by allowing different regions to compare their interpretations until a more consistent picture emerges.…
Physicists at TU Dortmund University showed in January 2024 that a continuous time crystal could persist inside a semiconductor, with its oscillations remaining stable for hours. Now, in a new study published inNature Communications, Prof. Alex Greilich and his colleagues have found that multiple time crystals can emerge within the…
For more than seven decades, doctors have used the drug 6-thioguanine (6-TG) to treat leukemia. Its effects in patients are well documented, but researchers are still working to understand the molecular details that determine why some cells are killed by the drug while others manage to withstand it. A team…
A new discovery from the University of Missouri is revealing an overlooked reason muscles can lose strength with age. The findings could eventually lead to treatments designed to help older adults remain active and independent, from walking safely to continuing everyday activities with family. W. David Arnold, executive director of…
Two newly identified snail species have expanded the known diversity of European land snails. The species, Cochlostoma komarnica and Cochlostoma dobrido, are described in a new study published in the open-access Biodiversity Data Journal. Neither species has an English common name yet. Both are small, with cone-shaped shells measuring about…
Evidence is building that Uranus’ moon Ariel may once have contained a vast ocean beneath its frozen exterior. Research published in Icarus explores how that hidden ocean may have changed over time and suggests it could once have been more than 100 miles (170 kilometers) deep. By comparison, the Pacific…
Astronomers are finding that the first generations of galaxies do not always behave the way existing models predict. One possible reason is that their most massive stars may have evolved very differently from massive stars in the modern Milky Way. A new survey led by the University of Utah is…
Greater amounts of REM and deep sleep were associated with lower risks of dozens of diseases, and less than 5 hours of total sleep was associated with high risks of disease, according to a new study published September 17th in the open access journal PLOS Medicine by Shengzhi Sun of…
Children taking GLP-1 medications for weight loss, prediabetes, or type 2 diabetes may face an important nutritional concern. A new study published in Childhood Obesity found that nearly one in six young patients (16.8%) were diagnosed with a nutritional deficiency during the first year after starting treatment. Vitamin D deficiency…
A fractured rib from Scotty, the largest Tyrannosaurus rex skeleton ever discovered, is giving researchers a rare look at dinosaur biology from 66 million years ago. Preserved inside the bone is something almost never found in the fossil record: evidence of an injury that was still healing when the animal…
Two of the most closely watched fault systems on North America’s West Coast may be more connected than scientists previously realized. A recent study suggests that the Cascadia subduction zone and the San Andreas fault can become synchronized, with a major earthquake on one fault potentially followed by seismic activity…
Rare infections that can pass from a pregnant woman to a developing fetus are associated with higher risks of autism and intellectual disability later in childhood, according to a large study from Karolinska Institutet published in JAMA Pediatrics. “It is important to emphasize that it is unusual for these infections…
A drug designed to remove aging, damaged cells may help older skin recover from wounds more quickly, according to research published in Aging (Aging-US). The study, titled “Topical ABT-263 treatment reduces aged skin senescence and improves subsequent wound healing,” examined a drug called ABT-263 and its effects on wound repair…
Plants have evolved several ways to use sunlight to turn water and carbon dioxide into energy-rich sugars and oxygen (photosynthesis). But when water becomes scarce, that process can become much more difficult. Researchers led by Wolfram Weckwerth at the University of Vienna have now uncovered how one especially water efficient…
For most of the satellite record, the Arctic sea ice melt season kept getting longer. Around 2010, however, that long-running trend unexpectedly flattened. For decades, Arctic sea ice generally began melting earlier in the spring and did not freeze again until later in the fall. Together, those changes extended the…
A faint ribbon of stars can be seen stretching across the galaxy in the image above. Known as a globular cluster stellar stream, this type of structure preserves clues about its past motion and evolution. By studying these streams, astronomers can learn more about how galaxies developed and how dark…
If you visit Scandinavia you are likely to find yourself at an exhibition about Vikings. There are many to choose from. The National History Museum in Denmark’s capital, Copenhagen, houses a major permanent exhibition on Viking. The Swedish History Museum in Stockholm boasts the largest Viking Age exhibition in the…
Researchers studying the origins of Stonehenge’s Altar Stone have proposed a new possibility for how the enormous rock began its journey from Scotland to southern England. A team from Sheffield Hallam University and Curtin University, Australia, analyzed ancient ice movement and found that glaciers during Britain’s last ice age may…
A major Atlantic Ocean circulation system that plays a central role in regulating Earth’s climate has been weakening across a broad region for nearly two decades, according to new research. The trend could have important consequences for weather, rainfall, storms, and sea level in regions around the Atlantic and beyond.…
Physicists at UC Santa Barbara have pushed the search for microscopic black holes at the Large Hadron Collider (LHC) at the European Center for Nuclear Research (CERN) into new territory. These hypothetical black holes would be extraordinarily small and short-lived. If they could be produced at the LHC, their existence…
The earliest stages of planet formation may have been far more selective than scientists once realized. As the young Solar System began assembling solid objects such as planets, moons, and protoplanets, two major types of material were available. One was chondrules, millimeter-sized pieces of rock formed at high temperatures. The…
Snow drought and unusually warm conditions across the Colorado Basin in 2026 sharply reduced water flowing into major reservoirs across the U.S. West. By summer, the effects of the weak 2025-2026 mountain snowpack in the Upper Colorado Basin had reached Lake Powell. With far less snowmelt than usual feeding the…
Researchers at Baylor College of Medicine have developed an experimental drug called CS18 that may help cancer treatments work against tumors that have become resistant to therapy. The study, published in Science Advances, provides early evidence supporting further investigation of CS18 as a possible future cancer treatment. “Therapeutic resistance is…
For years, people have debated whether drinking coffee in the evening interferes with sleep. Some people can have caffeine late in the day and fall asleep easily, while others may remain awake for hours. But researchers are increasingly finding that simply asking whether coffee delays sleep may miss a more…
The procedure was “remarkably” successful. That is how 74-year-old Cynthia Schraf-Fletcher describes genicular artery embolization (GAE), a minimally invasive treatment designed to reduce chronic knee pain. Nearly a year after having the outpatient procedure on her right knee, she says the result feels almost the same as the total knee…
Stanford researchers have directly observed quantum jumps of sound in a mechanical resonator for the first time, marking the latest milestone in a line of quantum physics research that stretches back more than a century. Quantum jumps — sudden transitions from one energy state to another — have been part…
A rare observation of a humpback whale mother remaining beside her dead calf is offering researchers a closer look at how these animals may respond to loss. The encounter, documented by researchers from Griffith University and Sea World Foundation, raises the possibility that humpback whale mothers may experience grief when…
Tiny flying robots may one day help rescuers search for people trapped beneath collapsed buildings after earthquakes. Because of their small size, these robotic insects could potentially move through narrow spaces that larger drones cannot enter while avoiding walls, debris, and falling objects. Until recently, however, aerial microrobots have been…
Engineers have created a new type of concrete that is stronger than conventional concrete while also capturing carbon dioxide from the atmosphere. The findings, reported in Carbon Research, suggest that adding carefully selected natural materials could give concrete a second role beyond construction by helping remove CO2 from the surrounding…