"In August 2011, as President Obama prepared to unveil a major new environmental regulation on smog, his political advisers issued a warning: The rule would affect power plants and factories throughout the Midwest, slowing the economy in states like Ohio that would be crucial to the president’s re-election."

"The Ohio River, transformed by mining and industrial waste and sewage overflows into the nation’s most polluted major waterway, has a new and unexpected tormentor this fall: carpets of poisonous algae."

"Duke Energy agreed Tuesday to pay North Carolina regulators $7 million to settle allegations of groundwater pollution at its coal ash pits and to perform accelerated cleanups costing millions of dollars at four sites."

"The Environmental Protection Agency announced new rules Tuesday to reduce toxic air pollution from oil refineries by forcing operators to adopt new technology that better monitors and controls emissions."

"VINELAND, N.J. -- Following months of investigations and public hearings, the U.S. Environmental Protection Agency has proposed to add the former Kil-Tone Company grounds to its Superfund list of the most hazardous waste sites in the country."

"Following an 18-month scuffle under the Freedom of Information Act, the Pentagon has released records detailing serious contamination on Okinawa base land slated soon for return to civilian use."

"The Environmental Protection Agency is set to release a contentious new rule limiting surface-level ozone pollution."

"The U.S. Environmental Protection Agency plans sweeping changes to the way it tests for diesel emissions after getting duped by clandestine software in Volkswagen cars for seven years."

"The Environmental Protection Agency said Wednesday it will set up a temporary treatment plant for wastewater flowing from the Gold King Mine in southwestern Colorado after 3 million gallons surged out of the mine in August, tainting rivers in three states."

"Martin Winterkorn resigned as chief executive of Volkswagen on Wednesday, taking responsibility for an emissions cheating scandal that has gravely damaged the carmaker’s reputation."