New research shows humans impact wolf packs in national parks

New research shows how humans are a substantial source of mortality for wolves that live predominantly in national parks—and more importantly, that human-caused mortality triggers instability in wolf packs in national parks.

Why aren't all black bears black?

Sometimes a name is just a name. Take bears, for example. In Yellowstone National Park, black bears outnumber their brownish-colored grizzly bear cousins, and in coastal areas of the Pacific Northwest, if someone says "brown ...

How bringing back lost species revives ecosystems

Scientists often study the grim impacts of losing wildlife to hunting, habitat destruction and climate change. But what happens when endangered animals are brought back from the brink?

Managing Washington's gray wolf population—through fear

The high-profile reintroduction of gray wolves to Yellowstone National Park in 1995 is generally considered a conservation success: Gray wolf packs inside and outside the park gradually established new populations. In Washington, ...

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