Los Angeles Times: Environmentalists have petitioned the U.S. Fish and Wildlife Service to list the San Bernardino flying squirrel, a nocturnal glider native to Southern California mountains, as an endangered species, threatened by climate change. The petition, filed Tuesday by the Tucson-based Center for Biological Diversity, opens a new front in an effort to combat global warming through the Endangered Species Act. The moves come after the federal government in 2008 granted protected status to the …