Researchers discovered why bird flu can survive temperatures that stop human flu in its tracks. A key gene, PB1, gives avian ...

Long-term inhalation of toxic air appears to dull the protective power of regular workouts, according to a massive global ...

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 ...