YELLOWSTONE NATIONAL PARK, Wyo. (AP) - Rangers in Yellowstone National Park have killed a black bear that became accustomed to eating human food. Park officials say the 130-pound male bear was getting food from hikers' backpacks in northern Yellowstone. Repeated attempts to trap the bear failed. On Wednesday, the bear was caught ripping into the packs of a large group of backcountry hikers. Rangers cleared the area of visitors and shot the bear.