Wade Davis, acclaimed anthropologist, journeys into hidden worlds to find cultures that have preserved their ways of life in the face of modern society. Mongolia Acclaimed anthropologist and explorer Wade Davis travels to the Central Asian steppes of Mongolia to meet descendents of Genghis Khan. These people are remnants of an ancient nomadic horse culture that thrived in the regions harsh conditions for more than 2,000 years. Australia National Geographic joins Wade Davis on a journey deep into the Australian outback to document the disappearing cultures of Australia's Aborigines, thought to be one of the oldest groups of peoples on earth. After losing clan members to disease, war, and famine-as well as battling enforced relocations-small Aboriginal clans must fight to keep traditions alive for the next generation.