WASHINGTON— The U.S. Fish and Wildlife Service announced today that it will protect the wolverine population in the lower 48 states as threatened under the Endangered Species Act — a decision that ...

Image by Peter Mather. A wolverine departs successfully fitted with a radio collar. In March 2016, I cracked open the lid of a stout wooden box on Alaska's North Slope and was met with a growl.

“We looked it up and we’d never done a wolverine before,” Nagesan said ... collection is instrumental to understanding how animal species change over time. “These natural history ...