For the first time, scientists have discovered fossil evidence of an endangered, living tropical tree species. The ...

Humans are the only species on Earth known to use language. They do this by combining sounds into words and words into ...

A revised age for a German site indicates that our evolutionary cousins organized horse ambushes around 200,000 years ago.

The Arctic landscape during the Cretaceous Period may have been dominated by the dinosaurs, but the rivers and streams held something more familiar. Alaska's fresh waters 73 million years ago were ...