LA Times: California and 15 other states filed suit against the federal government today for denying them the right to restrict carbon dioxide emissions from cars and trucks, a major cause of global warming. The lawsuit, filed in the 9th Circuit Court of Appeals, challenges the Environmental Protection Agency’s Dec. 19 decision to deny California a waiver to pass its own tailpipe rules, which is permitted under the 1970 Clean Air Act. When it comes to air pollution, the act allows states to …