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 ...

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 ...

Do you collect souvenirs when you travel? If you’re anything like me you have shelf after shelf of mementos from your sojourns in all shapes and sizes – some novel, some deeply sentimental, and some ...