Frost over the World - Polar explorers - 22 May 09
Al Jazeera English
2012-05-14
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After 73 days living under extreme weather, with temperatures dropping below -40 degrees celsius, they are back. Pen Hadow and his team trekked more than 269 miles in the Arctic in an expedition to monitor the effects of climate change on sea ice. They join Sir David to tell us more about their icy adventure.
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