It's a long-held idea that turtles can tuck their heads into their shells when threatened. But is it true? And is this protective trick why turtles the world over have shells today? The answer is that ...

Little kids giddily squeal as a baby sea turtle, flippers flapping, lurches toward the water with the grace of a drunk lunging for a cab at closing time. Tourists applaud as about a dozen more ...

Turtle shells evolved over the course of 300 million years, but self-defense wasn't the initial driver, researchers think. When you purchase through links on our site, we may earn an affiliate ...