How the turtle shell evolved has puzzled scientists for years, but new research sheds light on how their hard shells were formed. Scientists say the ancient fossil skeleton of an extinct South African ...

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

With his age estimated at about 90, Cedar has weathered many of life's battles. But the craggy snapping turtle bears scars of what is surely his greatest test: large, wide gashes from a boat propellor ...

Dr. Universe: Why can’t sea turtles pull back into their shell? I was at the St. Louis Zoo, and they said tortoises and other turtles can pull back into their shells. – Tyler, 7, Missouri There are ...

In cartoons, when a turtle is spooked, it retreats into and closes up its shell. While used for comic effect, this imagery is based in fact – although not all turtles are capable of this protective ...

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, ...

A rare hybrid hawksbill-green sea turtle, rehabilitated at the Florida Keys-based Turtle Hospital, was fitted with a satellite-tracking transmitter and released from a Florida Keys beach Friday to ...

A few feet away from the turquoise water, about 17 UNC-Chapel Hill undergraduates form a loose semicircle, with the breeze fluttering their T-shirts and shorts. They’re at UNC’s Institute of Marine ...