Join Todd Sampson as he tackles some of the biggest challenges of his life using science as his guide. In this episode, Todd travels to the Himalayas to work with Sherpas 6,000m above sea level.

Join Todd Sampson as he tackles some of the biggest challenges of his life using science as his guide. In this episode, Todd joins a combat course with a platoon of soliders in the Amazon rainforest.

Join Todd Sampson as he tackles some of the biggest challenges of his life using science as his guide. In this episode, Todd joins a traditional African nomadic tribe to live as a hunter-gatherer.

Join Todd Sampson as he tackles some of the biggest challenges of his life using science as his guide. Tonight, will Todd be able to survive a round in a cage fight with only two weeks of training?