See Playful Snow Sloths and Other Ice Age Creatures in New Prehistoric Planet Trailer (Exclusive)

Narrator Tom Hiddleston teases "remarkable creatures and epic clashes for survival" in a sneak peek at 'Prehistoric Planet: ...
Modern Engineering Marvels on MSN

Oldest Antarctic Ice Reveals 6-Million-Year Climate Secrets

Indeed, the oldest directly dated ice ever retrieved from Earth has been pulled from the frozen expanse of East Antarctica, ...