For decades, the appendix has been dismissed as a useless organ — a leftover from human evolution with no real function.

The little muscles that enable people to wiggle their ears unconsciously flex when we're trying to pick one sound out of a din of noise, a new study finds. Think about how cats, dogs and certain ...

In the heart of Egypt’s Western Desert, scientists have uncovered more than 400 fossilized skeletons of prehistoric whales.