By paddling in just the right spots, ducklings save energy by surfing their mom’s waves, and pass along the benefit to siblings down the line.

Immunity against the coronavirus is waning, but additional doses of the same or different COVID-19 vaccines could help protect vulnerable people.

A hard-to-catch gecko species is named after martial artist Jackie Chan. Skin patterns, like one resembling a galaxy, inspire other newfound geckos’ names.

School COVID-19 testing programs can keep kids in class and safe, but face challenges ranging from deciding on a testing strategy to parental buy-in.

A record-breaking result reveals the precision achievable by atomic clocks, letting researchers detect slightly faster ticking over a tiny height change.

NASA’s Lucy is the first spacecraft to head to the two giant clumps of space rocks that tag along in Jupiter’s orbit.

Once settled and glued to the substrate, adult barnacles stay put. But turtle barnacles upend this trend, sliding slowly across their reptilian rides.