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See a photo of twin polar bear cubs in Canada's Hudson Bay.
See Canadian sled dogs eating raw Greenland shark meat. Because of a toxin in the meat, dogs are known to become "tipsy" after such feasts.
See a photo of a Nenet herder in Siberia preparing his reindeer for a journey across the tundra.
Watch Nenet herdsmen assembling their reindeer on the Siberian tundra.
Take a photographic journey through Montana and enter for a chance to win a trip for two!
Eighteen percent of the world's population can't get safe drinking water. Test your water knowledge.
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