The loss of Grasshopper Glacier, north of Cooke City, in the heart of the Greater Yellowstone Ecosystem, is a bellwether, scientists say.

Nature’s best engineer, and the largest rodent in North America, might be living right in your neighborhood. Meet Castor canadensis, the beaver.

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Subscribe to Sky Sports to watch live, or stream on NOW. You'll need a subscription that includes Sky Sports Football. Relive some classic matches in English football. Here, Nottingham Forest look ...