A bear lives, hunts, and watches the Arctic melt in ‘Ice Walker’
Dec 14, 2020
2 minutes
The polar bear’s den is a remarkable feat of evolution. After digging a depression in the snow, the bear settles in, her movement and temperature coordinating perfectly to create a chamber close to freezing, even as the winter Arctic air drops to some minus 40 degrees Fahrenheit.
Throughout her winter rest, the bear scratches and shapes a chimney, which allows fresh air in without undue heat loss.
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