| Summary: | A team of intrepid presenters travel to the edge of the Arctic - and beyond - to find out what life is like on top of the world. Discover the polar bears of Hudson Bay, in Canada, as they wait for the sea-ice to form so they can begin their winter hunt. And meet the citizens of the tiny town of Churchill - the 'polar bear capital of the world'. Expert presenters also head to the oil-fields of Alaska, round up reindeer with the Swedish Sami, and reveal what it takes to keep a Russian icebreaker afloat. Throughout it all, the bears battle to survive. What happens if the ice continues to melt? And what wider implications does this have for us all?
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