3. Grilled and Chilled (2007)

How the body copes with extremes of temperature. Humans live in some extraordinary places, from the middle of the Sahara desert to the frozen wastelands of Alaska. Take a snake to the North Pole, and it will stop moving in minutes; take a cat to the desert and it will be dead in hours. So how can some humans survive such extremes, and could anyone?

Release date: 2007-12-26