A sea turtle’s shell is living bone fused directly to its spine and ribs. It is not a detachable shield or an external case, ...

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 ...

Turtles today are often slow-moving, modestly sized creatures, but their ancient relatives were quite different. Long before ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. This one-ton turtle once ruled South America’s rivers — ...