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A massive international brain study has revealed that memory decline with age isn't driven by a single brain region or gene, but by widespread structural changes across the brain that build up over time. Analyzing thousands of MRI scans and memory .. ...

Scientists have identified a newly recognized threat lurking beneath the ocean's surface: sudden episodes of underwater darkness that can last days or even months. Caused by storms, sediment runoff, algae blooms, and murky water, these "marine ...

For thousands of years, wildfires on Alaska's North Slope were rare. That changed sharply in the 20th century, when warming temperatures dried soils and fueled the spread of shrubs, setting the stage for intense fires. Peat cores and satellite data . ...

Earth's oceans reached their highest heat levels on record in 2025, absorbing vast amounts of excess energy from the atmosphere. This steady buildup has accelerated since the 1990s and is now driving stronger storms, heavier rainfall, and rising sea ...

A new study reveals that alpha brain waves help the brain decide what belongs to your body. Faster rhythms allow the brain to match sight and touch more precisely, strengthening the feeling that a body part is truly yours. Slower rhythms blur that .. ...

Some people get drunk without drinking because their gut bacteria produce alcohol from food. Researchers have now identified the microbes and biological pathways behind this rare condition, auto-brewery syndrome. Tests showed patients' gut samples .. ...

Despite longstanding guidelines, many dementia patients are still prescribed brain-altering medications that can raise the risk of falls and confusion. A new study shows that while prescribing has decreased overall, people with cognitive impairment . ...

A damaging cotton virus thought to be a recent invader has actually been hiding in U.S. fields for nearly two decades. New research shows cotton leafroll dwarf virus was present as early as 2006, quietly spreading across major cotton-growing states . ...

Researchers studying cyanobacteria from hot springs in Thailand have discovered a new natural UV-blocking compound with impressive antioxidant power. Unlike conventional sunscreens, it's biocompatible and potentially safer for both people and the ...

A generative AI system can now analyze blood cells with greater accuracy and confidence than human experts, detecting subtle signs of diseases like leukemia. It not only spots rare abnormalities but also recognizes its own uncertainty, making it a .. ...