Genetic changes may set off a chain reaction that causes the spine’s natural shock absorbers to harden and deteriorate.

Ancient seafloor sediments have revealed a surprising twist in how the Atlantic’s massive circulation system works. During a ...

Millions of sperm do not always compete alone—some species send them into action as coordinated teams. A sweeping ...

A group of brain cells called orexin neurons appears to help us keep working when reaching a reward becomes increasingly ...

An exceptionally preserved snake fossil from Brazil reveals that early snakes were far more diverse than scientists once ...

A simple change in posture may subtly affect how people feel and make decisions. Participants who sat upright reported greater feelings of pride and took more successful risks in a virtual balloon ...

Stanford researchers discovered immune cells in flatworms that explode within minutes, killing nearby bacteria and foreign cells before vanishing completely. Their unusually fast and localized attack ...

Historic wildfires scorched huge areas of Spain and France, with one Spanish blaze burning an area about the size of New York ...

August brings four major celestial events, including a solar eclipse and the peak of the Perseid meteor shower. Dark New Moon skies could make the Perseids especially impressive, while Venus will ...

A spectacular fossil site in Canada contains 567-million-year-old creatures that may represent some of the earliest animals to move, reproduce sexually, and develop recognizable body plans. The ...

Photons traveling through a cloud of atoms can emerge so early that they appear to have spent a negative amount of time ...

A tiny 518-million-year-old sea creature has revealed the earliest known evidence of the structures that eventually became ...