In its pursuit of slacking fuel economy standards, the EPA has sent a proposal to the White House Office of Management and Budget seeking to hinder California's ability to set its own greenhouse gas emissions standards. California's size and its assertion that it will continue to require...

Several science advisers for the Environmental Protection Agency claim the agency has ignored its own research in order to rationalize the push to relax corporate average fuel economy (CAFE) targets. A group within the Science Advisory Board has recommended reviewing the EPA's justifications...

America's gas war is heating after 17 states, as well as the District of Columbia, filed a lawsuit against the Environmental Protection Agency's decision to redefine U.S. vehicle emissions and fuel efficiency rules through 2025. In April, EPA chief Scott Pruitt said the existing standards for...