Polar bears have become a poster species for how climate change is affecting wildlife behavior; however, other species are also feeling the effects. Pine nuts, one of the primary foods for grizzlies in Yellowstone, have been affected by bark beetle infestations.
These beetles have moved north into grizzly territory as the climate changes. Scientists are now predicting that there will be no summer Arctic ice within 100 years. Polar bears require this ice to hunt and reach their dens.
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