TORONTO—The World Wildlife Fund predicts the mass extinction of numerous animal species unless humankind mends its ways. That's the bad news. Ontario's environment commissioner has highlighted the moose as one such species under threat. But she has suggested a few modest ways to slow that trend. That's the not-quite-so-bad news. The World Wildlife Fund's apocalyptic Living Planet report briefly dominated the media when it was released on Thursday. It notes that vertebrates are under pressure around the world.