By Jason Bittel
Twenty years ago, polar bears made people think of Coca-Cola. Ten years ago, the bruins became the face of climate change because their melting Arctic ice habitat perfectly captured the dangers of a warming world. More recently, as a direct result of the bears' environmental poster child status, science deniers have begun using them in attempts to turn the argument for climate science on its head. But now, there's no way to talk about polar bears without talking about one particular viral video.