Turtle shells evolved over the course of 300 million years, but self-defense wasn't the initial driver, researchers think.

Repair of injured turtle shells can be difficult and time-consuming. This article describes how to manage the freshwater turtle in this phase of healing and how to keep fracture sites 'water-free'.

A 260 million-year-old fossil has been determined to be the oldest ancestor of turtles found to date, revealing something about the reptile's mysterious past. Michelle Starr is CNET's science editor, ...