Discover the extraordinary prehistoric giants – from mega-sloths to monster sharks – that once made today’s animals look ...

Millions of years after the last dinosaur roamed the earth, a new generation of killer animals rose to power. The Eocene, between 56-34 million years ago, was ruled not by killer reptiles but by a new ...

We human beings belong to a very exclusive group of animals. There are only four types of "great apes" in existence today, those being humans, chimpanzees, orangutans, and gorillas. As the name "great ...

A new study has reconstructed anacondas that lived in what’s now Venezuela 12 million years ago. The fossil vertebrae reveal ...

Just because a species is presumed extinct doesn’t mean it’s gone forever. Here are four glowing examples of this unique, and felicitous, phenomenon. Not all species that have been classified as ...

Advancing science may make it possible to bring back extinct species like the dire wolf—but should it? CU Boulder environmental studies and philosophy Professor Ben Hale says the answer is complicated ...