FILE - In this March 9, 2010, file photo a tanker truck passes the Chevron oil refinery in Richmond, Calif. A federal appeals court ruled Tuesday, May 26 against major oil companies in lawsuits brought by California cities and counties seeking damages for the impact of climate change. A panel of the 9th U.S. Circuit Court of Appeals said state courts are the proper forum for the lawsuits alleging that Big Oil promoted petroleum as environmentally responsible when producers knew it was causing damage. (AP Photo/Paul Sakuma, File)