10 years ago
How reintroducing wolves helped save a famous park
Wolves were once the top predator in America’s world-famous Yellowstone National Park. But the population was eradicated in the 1920s, leaving the wilderness wolf-free for seven decades. In 1995, however, wolves were reintroduced to Yellowstone; this gave biologists a unique opportunity to study what happens when a top predator returns to an ecosystem.
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