"The port agrees to remove requirements not directly related to the push to allow only newer, less-polluting trucks at the complex, including a demand that trucking firms file financial reports."

"Groups argue over whether benefits of green technology outweigh the possible health effects associated with burning garbage."

"The state is poised to ban the use of mercury-tainted coal fly ash at a Ravena cement plant that is the state's second largest source of airborne mercury pollution."

Cancer stories "are numbingly familiar to people who live in the vicinity of Tonawanda Coke Corp. The coke foundry recently was found by the state Department of Environmental Conservation to be emitting benzene, a carcinogen, up to 75 times higher than recommended guidelines. Those levels were up to 2ù times more than what the company reported to regulators."

"Clean air advocates are girding for a battle over a possible amendment to the annual U.S. EPA spending bill that would weaken the agency's ability to regulate air pollution from oceangoing vessels."

A new generation of urban, blue-collar environmentalists is waging war over "environmental justice" in the dense, polluted Latino neighborhoods of Los Angeles.

"The contested air permit for the Sithe Global Desert Rock coal-fired power plant on the Navajo Reservation in New Mexico today was sent back to the U.S. Environmental Protection Agency for additional analysis."

"The World Health Organisation (WHO) has drastically cut the maximum amount of radon -- a naturally occurring gas -- that should be permitted in homes because of strong evidence it causes lung cancer."

"Texas' new plan to improve the Houston area's famously dirty air may not meet federal limits for smog."

"The Obama administration signaled Wednesday that it would scrap a controversial Bush-era rule that set stricter limits for smog but fell short of scientific recommendations."

"The World Meteorological Organisation said Wednesday that the ozone hole is expected to be smaller in 2009 than a year ago."

"About 50 medical waste incinerators nationwide will have to reduce their air pollution under new regulations announced Wednesday by the Environmental Protection Agency."

Intensified monitoring for toxics in the air around certain schools has only raised more questions about health effects -- and some lawsuits.

"An important opposition deputy this week accused Chile's government of being less than candid with the public about alarming levels of fine particulate pollution found in the nation’s leading cities."

"The United States and Canada are nearing an international agreement to clean up the emissions of ships traveling within 200 nautical miles of shore."