Wolverines

AP Photo/Defenders of Wildlife, Ken Curtis

The wolverine is not going on the threatened species list, after all. On Tuesday, the U.S. Fish and Wildlife Service announced federal protected status for the fierce and rare carnivore is unwarranted at this time.

The wolverine is making a slow comeback from the brink of extinction in the Lower 48 states. But shrinking mountain snow packs caused by global warming could reverse those gains.

USFS

One of the rarest mammals in North America is staging a comeback here in the Northwest. Wildlife biologists have tracked wolverines on mountainsides where they haven't been seen in many decades. But several new studies also suggest the recovery could be short lived if mountain snowlines retreat due to global warming.