Alaska’s St. Paul Island, located in the Bering Sea between the U.S. and Russia, was once home to woolly mammoths — an ancestral cousin of the elephant. The Ice Age animals living on the small volcanic island went extinct 5,600 years ago and are considered to be one of the last surviving mammoth populations, as other specimens elsewhere around the world had died off 5,000 years prior. Now, scientists might finally know what killed them off.
