The first global agreement on climate change takes effect, and gray wolves enter Yellowstone.
Thu, Mar 21 2013 at 7:00 AM
March 21, 1995: Gray wolves are released in Yellowstone National Park
. The wolves (one seen at right), wiped out in much of the West in the early 1900s, are now the object of a long court battle between conservationists and ranchers, who fear that the wolves will prey on livestock. Within ten years, the wolf restoration project is considered a complete success.
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