"Children born to mothers who live close to freeways have twice the risk of autism, researchers reported Thursday. The study, its authors say, adds to evidence suggesting that certain environmental exposures could play a role in causing the disorder in some children."

"The U.S.-raised animals we eat consumed about 29 million pounds of antibiotics in the last year alone, according to a first-ever Food and Drug Administration accounting of antimicrobial drug use by the American livestock industry."

"In many places around Western Pennsylvania residents see clusters of death and clusters of people sickened by cancer or heart and lung diseases. And, like Lee Lasich, a Clairton resident, they're frustrated that government health and environmental agencies don't see them too, don't do something about the problems and don't take a tougher stance on enforcement of air pollution regulations."

"The latest research on the District's decade-long effort to reduce lead in its drinking water is likely to reverberate well beyond the city's borders and add a chapter to one of the more tortuous public health chronicles of the past century."

"Although Canada will not expose its own citizens to asbestos, its plans to continue exporting the deadly substance to developing countries has drawn widespread condemnation. "

"Republican senators blocked Democratic legislation on Thursday that sought to provide medical care to rescue workers and residents of New York City who became ill as a result of breathing in toxic fumes, dust and smoke from ground zero."

"The House on Wednesday failed to pass a bill to make it easier for federal regulators to shut down mines with a history of safety problems, dealing a blow to groups that had sought tougher regulation."