"Mercury pollution from coal-fired power plants is declining nationally after years of increases, prompted by laws in Illinois and more than a dozen other states that for the first time limited emissions of the toxic metal."

The Obama administration has decided to delay a rule that would cut emissions from power plants at major industrial facilities, the most recent in a series of decisions since the midterm election to postpone controversial environmental regulations and steer a more business-friendly course.

"The source is a Coachella Valley soil-recycling plant on tribal land, regulators say. Operators defend their enterprise, but agencies have cracked down."

"Americans are suffering from asthma in record numbers, according to a study released Tuesday by the Centers for Disease Control and Prevention. Nearly one in 10 children and almost one in 12 Americans of all ages now has asthma, government researchers said."

"Already-underfunded clean air bureaus are set to lose millions, according to figures from the National Association of Clean Air Agencies. Can they cope?"

"The nation's 25 most smoggy cities improved air quality over the last year, but half the nation's residents still live with unhealthy levels of air pollution, according to an American Lung Association report released on Wednesday.

"Federal and state officials are cracking down on a smelter in Chicago’s Pilsen neighborhood after tracing high levels of toxic lead in the air outside an elementary school less than two blocks away."

"A Georgia administrative law court has sided with two citizen groups opposed to the proposed Longleaf coal-fired power plant in Blakely, Georgia, designed to be the largest coal plant in the nation."

"Republicans say installing long-overdue pollution controls would harm economic recovery, while advocates claim the rules would create jobs and save lives."