"Many of America's coal-fired power plants lack widely available pollution controls for the highly toxic metal mercury, and mercury emissions recently increased at more than half of the country's 50 largest mercury-emitting power plants, according to a report Wednesday."

"A federal judge has sided with a Midwestern energy company, agreeing to dismiss allegations of Clean Air Act violations at five Illinois coal-fired power plants and partially dismiss claims of violations at a sixth plant."

"The latest science supports substantially tightening U.S. EPA's air quality standards for soot in order to safeguard public health and the environment, according to a draft report from agency scientists."

"Two billion people worldwide do their cooking on open fires, producing sooty pollution that shortens millions of lives and exacerbates global warming. If widely adopted, a new generation of inexpensive, durable cook stoves could go a long way toward alleviating this problem."

"The California Air Resources Board has adopted a measure developed with representatives of the electrical utilities that will limit and monitor the emissions of the greenhouse gas sulfur hexafluoride, SF6, from high-voltage electrical applications."

"Nearly a third of older-model cars stopped for roadside smog tests in Southern California failed them, despite having received a passing grade at inspection stations within a year, a state audit has found."

"The Teamsters union and environmental activists have formed an unlikely and outspoken alliance aiming to clear the air in American ports, and perhaps bolster the Teamsters’ ranks in the process."

"A fragrant personal care spray designed to make men appear to be free of unpleasant body odor has polluted California air to the degree that the state has fined the brandowner's corporate parent more than $1 million."