Colette Derworiz

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SCIENCE sciencemag.org P H O T O : J O H N E . M A R R IO T T / G E T T Y I M A G E S G rizzly bear No. 122, a 270-kilogram male aptly nicknamed The Boss, spends a lot of time traveling and eating along the railway that winds through the Canadian Rockies here. Bears have used the tracks since Canada’s first national park was created in 1885, gorging on the(More)
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