Imagine a world where monstrous beasts, with jaws large enough to crush bones and attitudes as fierce as their appearance, ...

With glacier-clad peaks rising almost vertically from thickly forested valleys, the North Cascades are often called the American Alps. The national park forms one unit of the North Cascades ...

You wouldn't have been able to predict this looking at the modern ecosystem," said paper author and vertebrate paleontologist ...

Knife-toothed reptiles called sebecids went extinct on the mainland 10 million years ago. New fossil evidence puts them on an island 4 million years ago.

Here are this week’s travel contests. There are tons of great sweepstakes to win this week! You can win trips to a Sandals ...