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, ...

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

Australia Zoo Wildlife Hospital has seen a surge of green sea turtles needing treatment for a mysterious disease that appears to "melt" their shells, causing lesions and open wounds on their shells ...

The biggest turtle ever described wasn’t an ancestor of today’s leatherback turtles or any other living sea turtles. But it looks like there are some things about being a giant, skin-shelled sea ...

I have two turtles, ages 55 and 35. They have been healthy for almost their entire lives. I’ve never had to take them to the vet but recently, one of them developed a hole in their carapace on the ...