(This program is no longer available for online streaming.) NOVA and National Geographic present exclusive access to a unique discovery of ancient remains. Located in an almost inaccessible chamber ...

As artificial intelligence grows more sophisticated by the day, the notion of Artificial General Intelligence (AGI) looms large—a machine that can think and reason like and even better than humans.

Vast ice sheets, towering beasts, and nomadic tribes—this was Earth during the first great migrations of Homo sapiens. A world both deadly and breathtaking. 'Bait and switch': Dems storm out of GOP's ...