Published May 25, 2012
Stay tuned for details of the National Geographic-North Face Everest expedition.
By winning protection for their boreal forest, indigenous Canadians help slow global warming.
Our correspondent reports from a Norwegian research ship that's drifting inside the Arctic ice cap, gathering data needed to predict its future.
In the insular world of dogsled racing, the Yukon Quest is considered the world's most difficult event.
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