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, ...

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 ...

This one-ton turtle once ruled South America’s rivers — until a changing planet proved too much for even the largest ...