Canadian Press: Scientists say shrinking Arctic sea ice may be forcing some polar bears into cannibalizing young cubs. "When (bears) are very hungry, they go looking for something to eat," biologist Ian Stirling said Friday. "There’s nothing much to eat along the Hudson Bay coast in the fall other than other bears." So far this fall, tour operators and scientists have reported at least four and up to eight cases of mature males eating cubs and other bears in the population around Churchill, …