From which ancestors have turtles evolved? How did they get their shell? New data provides evidence that turtles are not primitive reptiles but belong to a sister group of birds and crocodiles. The ...

A newfound giant turtle that lived 60 million years ago in what is now northwestern South America would have been more than a mouthful for a neighboring predator, the world's largest snake Titanoboa.

Two years ago, physicists at the University of Chicago were greeted with fireworks—atoms shooting out in jets—when they discovered a new form of quantum behavior. But the patterns underlying the ...

Turtles and tortoises are reptiles with hard, protective shells, but they differ significantly in habitat, anatomy, and lifestyle. Turtles are primarily aquatic or semi-aquatic, featuring streamlined ...