An Ice Age giant was tumbling around North America during the Late Pleistocene. About the size of a bear, it was actually a kind of enormous sloth that had evolved to thrive in freezing conditions.

When the asteroid ended the age of non-avian dinosaurs, it cleared ecological space on a global scale. Small survivors ...

LAS VEGAS (KLAS) — A new study gives scientists a fresh look at what life was like in the Las Vegas valley more than 12,000 years ago. Before the strip, Southern Nevada was home to ice-age animals.

(CNN) — On the vast expanse of the Siberian steppe 14,000 years ago, a 2-month-old wolf pup gobbled down some woolly rhinoceros flesh. Moments later, its underground den collapsed, killing the pup and ...

Most of the large animals that have walked the surface of Earth are no longer here. Why? Dan Mann thinks it’s because our recent climate has been too stable, at least when compared to the wacky ups ...

Picture a world where massive glaciers sculpted the land, and woolly mammoths shared the plains with saber-toothed cats. This isn't a scene from a fantasy film, but rather a snapshot of Earth's ...

A close-up of the wolf puppy, which was frozen for 14,000 years in the Siberian permafrost. - Mietje Germonpré On the vast expanse of the Siberian steppe 14,000 years ago, a 2-month-old wolf pup ...