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 ...

Ever consider the question of whether a turtle can truly pull its head into its shell like a cartoon representation in a children’s tale? The answer is far from being merely yes or no. As mentioned in ...

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 recent tragedy occurred in Indian River County, Florida when an elderly man tried to save a turtle. The reptile was slowly creeping across I-95 when an 87-year-old Vermont native attempted to help ...

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