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When biologist Andrew Derocher discovered in the 1990s how polar bears were affected by climate change, his work helped launch the charismatic critter as an icon — used by activists as a poster animal for a warming world, and exploited by climate deniers to argue the opposite. But get close and the story of Arctic change is more complex.More... From http://start.westnet.ca News News Provided By WestNet Wireless Internet |