While the public and the media focus on Scott Pruitt's ethics scandals, the EPA boss is quietly advancing a regulatory overhaul that could have profound implications for air quality standards.

U.S. power grid companies should expect dangerous cybersecurity intrusions to keep increasing, with adversaries seeking to break through defenses by infecting utilities' trusted suppliers, the North American Electric Reliability Corp. says.

A federal court has temporarily blocked a key permit for the Mountain Valley pipeline.

EPA faced bipartisan opposition at a public hearing this morning on its planned rejection of "good neighbor" petitions from Maryland and Delaware seeking a federal crackdown on ozone-forming pollution from outside their boundaries.

Officials want help in finding the state's most vulnerable fossil fuel plants and exploring whether energy storage could replace them.