May 14, 2019
The grizzly bear's expanding range in the Yellowstone National Park area, 1990-2018. Credit: D. Bjornlie/ Wyoming Game and Fish Dept. via USGS

The grizzly bear's expanding range in the Yellowstone National Park area, 1990-2018. Credit: D. Bjornlie/ Wyoming Game and Fish Dept. via USGS

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