NOVA and National Geographic present exclusive access to a unique discovery of ancient remains. Located in an almost inaccessible chamber deep in a South African cave, the site required recruiting a special team of experts slender enough to wriggle down a vertical, pitch-dark, seven-inch-wide passage. Most fossil discoveries of human relatives consist of just a handful of bones. But down in this hidden chamber, the team uncovered an unprecedented trove—so far, over 1,500 bones—with the potential to rewrite the story of our origins. They may help fill in a crucial gap in the fossil record and tell us how Homo, the first member of the human family, emerged from ape-like ancestors like the famous Lucy. But how did hundreds of bones end up in the remote chamber? The experts are considering every mind-boggling possibility. Join NOVA on the treacherous descent into this cave of spectacular and enigmatic finds, and discover their startling implications for the saga of what made us human.
In 2017, the U.S. released films from a generation of nuclear tests allowing scientists to study the last images of thermonuclear explosions we hope we'll ever see. But just getting them took years of trying and dozens of nuclear explosions. In Los Angeles, a secret film studio, Lookout Mountain, staffed by Hollywood professionals, produced countless films aimed at diverse audiences from policymakers to soldiers, scientists to civilians. The goal: convince anyone who will listen.
For decades, scientists believed that humans were forced to wait until the end of the last Ice Age before they could enter the Americas. Evidence suggests that 11,000 years ago they crossed the Bering Land Bridge by foot, into what is now modern-day Alaska. Those peoples were called the Clovis, and their arrival and hunting practices were blamed for the sudden disappearance of many large mammals, from mastodons and woolly mammoths to giant ground sloths and sabre-toothed tigers. In recent years however, tantalizing – but often frustratingly inconclusive – evidence of an earlier human migration into the Americas has begun to emerge. It is an incredible revelation – to think that ancient humans could somehow have managed to get past a sheet of ice four kilometres thick. In this fascinating documentary, Canadian anthropologist and adventurer Niobe Thompson takes us inside the incredible scientific discoveries that are finally unraveling these mysteries
Cataclysm in Vietnam as the war reaches a turning point - there's no going back. The betrayal by Richard Nixon.
S1E7 • Oliver Stone's Untold History of the United States • 2013 • History