Snakes have adapted to climb trees, leap across hot sand, and even swim through water — all without arms or legs. What’s their secret? Mike Bock This corn snake, shown here at the Smithsonian's ...

It is easy to think of snakes as creatures that were always legless, gliding effortlessly through grass or sand. Yet millions of years ago, their ancestors had four fully formed limbs. The journey ...

On very rare occasions, an exceptional fossil is unearthed that provides an extraordinary glimpse into the evolution of a group of organisms. This time, it is the beautifully preserved skull of an ...