(Earth Focus: Episode 51) Gray wolves once ranged across North America. By the 1930s, they were nearly extinct — trapped, poisoned and hunted by ranchers, farmers and government agents. With protection under the 1973 Endangered Species Act, the wolf population rebounded. But wolves lost federal protection in 2011. With hunting permitted in many Western states, the future of wolves may again be in question. Can we co-exist with wolves? Earth Focus goes to Montana and Wyoming to find out.