Invasives have largely wiped out the American chestnut and elm, caused “hell” with the beech, and are now wreaking havoc on ...

At least 50 gray wolves live in California now, a success story for environmentalists and headache for ranchers ...

A third reintroduced gray wolf from British Columbia has been found dead, this time in Rocky Mountain National Park. The U.S. Fish and Wildlife Service is investigating the death, as gray wolves ...