"Several environmental groups are suing the government to curb pollution of the Mississippi River with fertilizers and other contaminants blamed with creating a "dead zone" the size of Massachusetts in the Gulf of Mexico."

"SACRAMENTO -- Energy companies across California are injecting a mysterious mix of chemicals into the ground to tap oil deposits while frustrating attempts to regulate the controversial process, known as hydraulic fracturing."

"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."

"FRESNO, Calif. -- Nitrate contamination of drinking water is a pervasive problem in California's agricultural heartland and is bound to intensify in the coming years, according to a University of California, Davis study released Tuesday."

Contaminated fill, a little-noticed and largely unregulated health threat, is keeping some ball fields closed this spring in New Jersey ... and probably is a problem in many other areas.

"CHEYENNE, Wyo. -- The state of Wyoming, U.S. Environmental Protection Agency and two American Indian tribes announced Thursday they have agreed to additional testing of groundwater that the federal agency says may have become contaminated by gas development that includes hydraulic fracturing."

"The nonprofit group Friends of the Earth filed a lawsuit against the Environmental Protection Agency today to force the regulation of lead emissions from general aviation aircraft under the Clean Air Act."

"LUDINGTON, Mich. (AP) — On many a summer evening, Jim Fay joins dozens of onlookers on this tourist town's waterfront, exchanging friendly waves with passengers and crew members as the S.S. Badger chugs into the harbor after a 60-mile voyage across Lake Michigan from Manitowoc, Wis. It's a cherished ritual in Ludington, and its days may be numbered. "