"Debra White Plume and Marie Brush Breaker Randall stood in the middle of Highway 44, alongside more than 70 other members of the Oglala Lakota Nation. For hours, they didn't budge -- much to the chagrin of some tractor-trailer drivers bound for the tar sands region of Alberta, Canada."

"Supreme Court justices [Tuesday] appeared receptive to the trucking industry's call to strike down a Port of Los Angeles program designed to clean up some of the country's most diesel-polluted air."

"WASHINGTON -- The Obama administration’s nominee to lead the Environmental Protection Agency declined on Thursday to answer questions about a controversial new guide that suggests public health standards could be relaxed dramatically in the event of a nuclear attack or accident."

"High benzene levels in groundwater have been detected about 1,400 feet downstream of the presumed source of a hydrocarbons leak northwest of Parachute, the state Department of Natural Resources said today."

"SPRINGFIELD, Ohio -- The U.S. Environmental Protection Agency will conduct tests at a Tremont City site containing buried barrels filled with 1.5 million gallons of hazardous waste."

"MAYFLOWER, Arkansas -- Warren Andrews had just finished putting up balloons for his stepdaughter's 18th birthday party at their suburban home in Mayflower, Arkansas, when his wife came inside and said something was wrong."

"A court ruling that the U.S. government must consider the environmental impact of 'fracking' on federal lands leased to oil companies offers opponents of the technique a useful weapon in the fierce public debate in California and other parts of the country."

"LITTLETON, New Hampshire -- A New Hampshire jury on Tuesday found Exxon Mobil Corp liable for $236.4 million in a civil lawsuit that charged the oil company had polluted groundwater in the state with a gasoline additive used to reduce smog in the 1970s and 1980s."

"Much of the oil spilled into the Gulf of Mexico after the Deepwater Horizon explosion in 2010 disappeared within weeks of the capping of BP's Macondo well on July 15, digested by a massive explosion in oil-eating microorganisms, said Terry Hazen, a professor of environmental biology at the University of Tennessee-Knoxville, during a Monday panel at the national conference of the American Chemical Society in New Orleans."

"Toxic chemicals clinging to plastics could cause health problems for fish and other organisms in the Great Lakes."