"At least seven people were treated and several communities evacuated Saturday following an early morning leak of extremely toxic chlorine gas from a Northern Panhandle chemical plant with a recent history of significant safety problems."

"As Kevin Widener was growing up on his family’s tobacco farm in the rolling hills of southwest Virginia in the 1990s, lawmakers and lawyers in Washington were waging a war on smoking."

"Study finds a cocktail of legal and illegal drugs in Baltimore's Gwynns Falls, most likely from city's leaking sewers".

"Teamwork from Maryland environmentalists — from elementary schoolers to nonprofit workers — could result in new oyster habitat, and consequently cleaner water, for the Chesapeake Bay. Maryland Coastal Conservation Association members and partners dumped 70 concrete reef balls into the bay on Thursday, the first deployment for the organization's Living Reef Action Campaign."

"Maryland’s ravaged Chesapeake Bay oyster population shows signs of revival inside the state-created sanctuaries that have been off-limits to harvesting for the past decade, according to a report from the Department of Natural Resources."

"Times are tough for Chesapeake oysters. For one thing, they used to be bigger. "If you look at what people were saying back in the 1600s and 1700s about oysters, people had to cut them in half before they could even eat them," says Denise Breitburg, an ecologist with the Smithsonian Environmental Research Center."

"AMBLER, Pa. -- U.S. EPA's Greg Voigt opens a chain-link gate, pushes aside waist-high weeds and scrambles to the highest point in this Philadelphia suburb: a 100-foot pile of industrial waste."

"A federal appeals court [Tuesday] upheld U.S. EPA's retroactive veto of a water permit for a West Virginia mining project in a big win for the Obama administration."

"It’s the kind of choice that climate change will be forcing over and over."

"Federal government scientists on Friday released the final update of their study of Crude MCHM, without answering several important questions about the potential health effects of the January 2014 chemical spill that contaminated the drinking water supply for hundreds of thousands of residents in Charleston and surrounding communities of the Kanawha Valley."