The Mystery of Chaco Canyon

A look at the origins, history and conspiracies behind the "Majestic 12", a clandestine group of military and corporate figureheads charged with reverse-engineering extraterrestrial technology.

Scientists examine underground clues from over 250,000 years ago that raise questions about our early relatives — and what it truly means to be human.

The film follows adventurer Jeff Johnson as he retraces the epic 1968 journey of his heroes Yvon Chouinard and Doug Tompkins to Patagonia.

This documentary delves into the mysteries surrounding the Neanderthals and what their fossil record tells us about their lives and disappearance.

National Geographic's riveting effort recounts all 12 crewed missions using only archival footage, photos and audio.