"PITTSBURGH -- A former top environmental official says Pennsylvania’s successful efforts to keep Marcellus Shale wastewater away from drinking water supplies should be extended to all other oil and gas drillers."

A coal-fired power plant in Georgia has neighbors worried about the consequences of its ash-disposal pond.

"Toxic waste sites may be concentrated in Rhode Island's urban core, but they also appear in surprisingly significant numbers in some of the state's sleepiest suburbs and rural retreats, a GoLocalProv review of state and federal data shows."

"TORONTO — The loosening of rules around spreading sewage sludge -- potentially laced with pharmaceuticals like Viagra -- on Ontario farm fields has critics sounding the alarm about potential health risks."

"WASHINGTON, DC -- For decades, affluent families have flocked to Spring Valley, a quiet neighborhood hugging the northwestern boundary of the nation’s capital. True to its name, magnolias are blooming and daffodils carpet the yards. But during World War I, soldiers called it Death Valley. It was here that the Army cooked up chemical weapons, launched poison-packed mortar shells and sent gas clouds billowing over the fields."

"The memory and attention problems plaguing thousands of veterans from the first Gulf War might be caused by low-level exposure to insecticides and nerve gas, said researchers at Georgia Health Sciences University."

"The U.S. Environmental Protection Agency today added nine new hazardous waste sites to the National Priorities List of Superfund sites, and is proposing to include 10 additional sites."

"SAN FRANCISCO -- In 2005, the USS America aircraft carrier was towed out to sea on her final voyage. Hundreds of miles off the Atlantic coast, U.S. Navy personnel then blasted the 40-year-old warship with missiles and bombs until it sank."