When polar bears attack: How climate change is creating a new breed of unlikely killers
By Lindsay Abrams
In the summer of 2013, seven American hikers set off on a two-week expedition through Canada’s Arctic tundra. The plan was to experience a pristine landscape rarely seen by humans and, if they were lucky, catch a glimpse of the region’s polar bears. They went prepared with flares and electric fences — enough, they assumed, to protect them from the massive predators. It wasn’t.

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