Oil and gas companies fighting lawsuits over coastal land loss and environmental degradation in Louisiana have been handed a win by the Supreme Court. The companies have been given a new day in federal court after a state jury ordered Chevron to pay upward of $740m to clean up damage to the state’s coastline, one of multiple similar lawsuits. They deny responsibility for land loss in Louisiana and argue that it is wrong to sue them for what they did before state environmental regulations were in place. The companies commenced oil production and refining during World War II as U.S. contractors.