Nearly half of US bald eagles suffer lead poisoning

America's national bird is more beleaguered than previously believed, with nearly half of bald eagles tested across the U.S. showing signs of chronic lead exposure, according to a study published Thursday.

Wind energy boom and golden eagles collide in the US West

The rush to build wind farms to combat climate change is colliding with preservation of one of the U.S. West's most spectacular predators—the golden eagle—as the species teeters on the edge of decline.

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