Air

"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 week after opponents of coal-fired electricity flooded the chambers of the Idaho Public Utilities Commission, regulators have denied a bid by Idaho Power to charge its customers $130 million to help implement mandated pollution controls for two of four generators at the Jim Bridger coal plant near Rock Springs, Wyo., where the utility company is part owner."

"China can learn from U.S. struggles to reduce pollution as it confronts recent high-profile incidents of poor air quality paralyzing major cities, the top U.S. environmental regulator said on Monday."

A new study says that U.S. emissions of the greenhouse gas methane, often emitted by farm and energy operations, are much larger than previously estimated.

"TORONTO -- Ontario is going coal-free. The largest coal-burning power plant in North America, Nanticoke Generating Station on the north shore of Lake Erie, will stop burning coal this year, Ontario Premier Kathleen Wynne announced on Thursday."

"Nitrous oxide (N20) emissions could almost double by 2050 if more aggressive action is not taken, undermining global efforts to curb climate change, the United Nations' Environment Programme (UNEP) said on Thursday."

"Winona will be the first U.S. city to monitor pollution from trucks hauling frac sand en route to fracking operations."

"MODESTO, Calif. – The students filing into Bret Harte Elementary School every morning barely notice the flags fluttering by the school's main entrance. There is the American flag, the California state flag and the color-coded asthma flag – green when the air is clear, red when it is a respiratory nightmare, as it so often is here."

"'Asthma pretty much rules our medicine cabinet,' said school nurse Diana Connacher, revealing a stockpile of inhalers belonging to the school's youngest students, at least one or two per classroom. 'We have a lot of 'frequent fliers' around here.'

"LOS ANGELES -- Wildfire smoke poses a growing health risk to millions of Americans, even for those who live hundreds of miles from the flames, a new report by an environmental group says."