According to one app for nature observers, it's the most commonly seen creature in California: the western fence lizard. Why?

A new study indicates the giant reptile Deinosuchus is not a close relative of modern alligators, as scientists previously ...

This fossil is 13 million years older than any ant fossil found before—and reveals a sophisticated predator that lived alongside the dinosaurs.

A study finds that owning a cat or dog creates happiness equivalent to earning an extra $92,655 annually—here's what this ...