Global warming and melting ice are rapidly changing the landscape of the Earth's polar regions. What will it mean for life at the poles, and for the rest of the world? Norwegian explorer Borge Ousland has seen this environmental transformation for himself. He’s the first person to complete solo expeditions across both the North and South Poles. In 2010, he completed the Northern Passage – a circumnavigation of the entire Arctic ocean. He joins us to talk about his adventures in the vast, frozen tundra of the poles.
