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Annual Polar Bear Migration Under Way: How It Works and How Climate Change Could Be Impacting It

Annual Polar Bear Migration Under Way: How It Works and How Climate Change Could Be Impacting It

National Geographic - Christy Ullrich Barcus

Melting sea ice means big changes for the world's 20,000 polar bears. 4 Minute Read In the past month, hundreds of polar bears have strolled past a small town in Canada. It's part of their annual migration back to Hudson Bay, where sea ice is reforming after months of summer melt. To get to the ice …

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