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Researchers found that repeated head impacts can disrupt a key system that helps the brain wash away waste. In professional fighters, this system initially seems to work harder after trauma, then declines over time. MRI scans revealed that these ...

A major review across 73 countries finds that access to antiseizure medications is rising, but safe prescribing isn't keeping pace. Valproate--linked to serious birth defects--remains widely used in many regions despite WHO warnings. Limited access . ...

Researchers have finally assigned a strange 3.4-million-year-old foot to Australopithecus deyiremeda, confirming that Lucy's species wasn't alone in ancient Ethiopia. This hominin had an opposable big toe for climbing but still walked upright in a .. ...

Princeton researchers found that the brain excels at learning because it reuses modular "cognitive blocks" across many tasks. Monkeys switching between visual categorization challenges revealed that the prefrontal cortex assembles these blocks like . ...

Data from over 47,000 dogs reveal that CBD is most often used in older pets with chronic health issues. Long-term CBD use was linked to reduced aggression, though other anxious behaviors didn't improve. The trend was strongest among dogs whose owners ...

Researchers discovered why bird flu can survive temperatures that stop human flu in its tracks. A key gene, PB1, gives avian viruses the ability to replicate even at fever-level heat. Mice experiments confirmed that fever cripples human-origin flu .. ...

Long-term inhalation of toxic air appears to dull the protective power of regular workouts, according to a massive global study spanning more than a decade and over a million adults. While exercise still helps people live longer, its benefits shrink ...

Researchers identified a new, sticky form of mitochondrial DNA damage that builds up at dramatically higher levels than in nuclear DNA. These lesions disrupt energy production and activate stress-response pathways. Simulations show the damage makes . ...

Using intense X-rays, researchers captured a buckyball as it expanded, split and shed electrons under strong laser fields. Detailed scattering measurements showed how the molecule behaves at low, medium and high laser intensities. Some predicted ...

Warming up significantly improves muscle performance, particularly speed and power, by increasing muscle temperature. Both passive heat methods and light exercise warm-ups work, but mimicking the actual workout movements can offer extra benefits. ...