2. Nenets

Location: Russia Explorer Bruce Parry travels to the frozen tundra of Northern Siberia, spending a month with a brigade of Nenet reindeer herders during their winter migration. The herders travel hundreds of miles in temperatures that can drop to -40.

3. Anuta

Location: Solomon Islands He sails to the island of Anuta, a tiny tropical outpost in the South Pacific, one of the most isolated communities on Earth.

4. Akie

Location: Tanzania Bruce Parry spends time with the Akie people, one of the last groups of hunter-gatherers to live on the African savannah. He is forced to face his biggest fear and put his hand into a bees' nest to gather wild honey.

5. Layap

Location: Bhutan Bruce Parry treks into the high mountains in the tiny Himalayan kingdom of Bhutan to live with the isolated Layap people.

6. Penan

Location: Sarawak, Borneo Bruce Parry treks into the jungles in search of the last nomadic Penan. The Penan are hunter-gatherers whose forest home is in the process of being cut down around them and whose traditional way of life is about to disappear forever.