Join Todd Sampson as he tackles some of the biggest challenges of his life using science as his guide.

Todd joins a traditional African nomadic tribe to live as a hunter-gatherer.

Todd joins a combat course with a platoon of soldiers in the Amazon rain forest.

Todd travels to the Himalayas to work with Sherpas 6,000m above sea level.

Todd spends a week in a Bollywood stunt gym before shooting his own sequence.

Todd learns the traditional methods of free-diving fishing from the Bajau people.