"The outbreak of Legionnaires’ disease in the South Bronx is the largest in New York City history, officials said Tuesday, as they announced new measures to fight a disease that had claimed the lives of seven people and sickened more than 80 others."

"Though the amount of microcystin present in raw Lake Erie water near Toledo’s water-system intake Wednesday was double the amount detected two days earlier, city officials announced they planned to scale back testing for the toxin."

"Seven years after the end of a much-lauded program to monitor mercury in Louisiana’s waterways, state officials lack updated data to warn people about any potential contamination in the fish they catch and eat."

"Chile's salmon farmers are using record levels of antibiotics to treat a virulent and pervasive bacteria, driving away some U.S. retailers including Costco Wholesale Corp, which is turning to antibiotic-free Norwegian salmon."

"The D.C. Circuit Court of Appeals has upheld an Environmental Protection Agency (EPA) rule on emissions of certain toxic air pollutants at manufacturing plants."

"Three years after federal health officials cut by half the amount of lead in a child’s blood that they said warrants medical attention, Massachusetts has yet to tighten its standards."

"Senior U.S. health officials have squelched a Food and Drug Administration proposal that for the first time would have curbed dentists’ use of mercury – one of the planet’s nastiest toxins because it attacks the central nervous system – in treating Americans’ decayed teeth."

"Microscopic bugs and mildew can destroy a marijuana operation faster than any police raid. And because the crop has been illegal for so long, neither growers nor scientists have any reliable research to help fight the infestations."

"Will the bills seeking to amend the Toxic Substances Control Act really protect Americans?"

"Air pollution in the Twin Cities contributes to about 2,000 premature deaths every year, and sends 1,000 people to the hospital for asthma, lung and heart disease treatments."