Fifty thousand years ago, North America's landscapes were alive with an astonishing array of enormous creatures. Massive woolly mammoths roamed vast icy plains, while dense forests echoed with the ...

The world of prehistoric animals holds countless mysteries, and some of the most extraordinary creatures have been preserved ...

In this video, we take you on a journey to the Pleistocene Epoch, a time when Earth looked vastly different from today.

Rising temperatures are causing glaciers to lose ice at a rate higher than the average rate over past centuries.

New research challenges the long-held belief that the Arctic Ocean was covered by a massive ice shelf during ice ages.