"A New York environmental group says the use of fracking waste on some of the state’s roads is occurring more than initially thought. The state agency that regulates the use of fracking brine says it ensures the waste does not have high concentrations of pollutants."

"The U.S. environmental regulator argued in court on Tuesday that its rule limiting mercury and hazardous air pollutants is 'appropriate and necessary,' not an improper interpretation of the federal Clean Air Act as industry groups and some states contend."

"WASHINGTON -- U.S. Supreme Court justices offered President Barack Obama's administration some encouragement on Tuesday as they weighed the lawfulness of a federal regulation limiting air pollution that crosses state lines, mostly emissions from coal-fired power plants."

"WASHINGTON — In a battle that pits the East Coast against the Midwest over the winds that carry dirty air from coal plants, the governors of eight Northeastern states plan to petition the Environmental Protection Agency on Monday to force tighter air pollution regulations on nine Rust Belt and Appalachian states."

"The United States will help China implement stricter emission standards for vehicles in a bid to help the world's biggest carbon emitter tackle rampant air pollution, the White House announced on Thursday."

"Environmental and industry advocates say a proposed air emissions reporting permit issued last week for BHP Billiton Ltd.'s San Juan Coal Mine in northwestern New Mexico is the first -- or among the first -- ever proposed for a coal mine."

"A case involving the disposal of industrial wastewater pits two interests that are dear to many Texans against each other: oil and gas resources versus private property rights."

"Two class-action lawsuits were filed against General Mills on Thursday by residents in the Como neighborhood of southeast Minneapolis, where state-ordered testing has shown troubling concentrations of the pollutant TCE in soil below their homes."

"EDMONTON -- A key environmental agency working to clean up the oilsands is within weeks of folding, but board members say they’re still hopeful Environment Minister Diana McQueen will find a way to renew its industry funding."

"Michigan environmental officials are drafting a settlement with Canadian pipeline operator Enbridge Inc. over a series of violations of the state's water laws that occurred earlier this year."