San Francisco Chronicle: The Interior Department has violated a legal deadline for deciding whether to list the polar bear as an endangered species because of global warming and must act by mid-May, a federal judge has ruled, putting species protection on a collision course with the Bush administration’s push for oil drilling off Alaska. In her decision Monday, U.S. District Judge Claudia Wilken said oil industry operations in Alaska’s Chukchi Sea, where one-fifth of all polar bears live, "could …