New research questions the long-held theory that reintroduction of such a predator caused a trophic cascade, spawning renewal of vegetation and spurring biodiversity.
Some say that the wolves’ contribution to ecological improvements in Yellowstone were only one piece of a larger picture and that grizzly bears, beavers and even humans played a role.
A mining company wants to build a 211-mile industrial road through Alaskan wilderness to reach a large copper deposit. The Interior Department says it would harm wildlife and communities.
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