"The House on Tuesday passed, 229-199, a bill to delay the compliance date for Obama-era ground level ozone standards."

"After a five-year review, U.S. EPA has proposed leaving unchanged its two primary air quality standards for nitrogen oxides."

"How the state of Texas allows industrial facilities to repeatedly spew unauthorized air pollution — with few consequences"

"Environmental and public health groups asked a U.S. Appeals Court in a lawsuit filed on Wednesday to force the U.S. Environmental Protection Agency to reverse its decision to delay issuing a set of smog cleanup rules."

"GOBERNADOR, N.M. — Desert sand crunches beneath Don Schreiber's boots as he approaches a gas well on his sprawling ranch in the heart of the San Juan Basin. The equipment is painted yellow and green to blend in with the scrub. But there's no hiding the odor of rotting eggs that wafts across the arid terrain."

"A House committee approved a bill Wednesday slowing the implementation of federal ozone regulations."

"The restoration of the globe’s protective shield of ozone will be delayed by decades if fast-rising emissions of a chemical used in paint stripper are not curbed, new research has revealed."

"CAPE GRIM, Tasmania — On the best days, the wind howling across this rugged promontory has not touched land for thousands of miles, and the arriving air seems as if it should be the cleanest in the world. But on a cliff above the sea, inside a low-slung government building, a bank of sophisticated machines sniffs that air day and night, revealing telltale indicators of the way human activity is altering the planet on a major scale."

"U.S. EPA is giving states an extra year to meet Obama-era ozone regulations."