"An environmental assessment of the joint Chattanooga-Hamilton County firing range on Moccasin Bend indicates that the nearly 40 years of spent bullets at the site may be causing lead-laden surface water to flow into the Tennessee River."

"The Environmental Protection Agency (EPA) sent potential changes to the standard for ground-level ozone to the White House Office of Management and Budget on Wednesday."

"Pennsylvania environmental regulators are pursuing a record $4.5 million fine against a gas driller over what they describe as a major case of pollution from a leaking waste pit."

"What ties America's second-biggest energy company, ConocoPhillips Co., to a small Houston-based shale driller, Halcón Resources Corp.? They had some of the worst carbon pollution rates among their peers in 2012."

The Chesapeake Bay region would reap an additional $22.5 billion a year from improved hurricane protection, crab and fish production and climate stability if the Obama administration's contested plan to clean up the watershed proceeds, an environmental group says."

"Methane emissions from oil and gas wells on federal lands and waters jumped 135 percent from 2008 to 2013, an analysis shows, driven by a drilling boom in New Mexico and North Dakota that has outpaced the building of pipelines and processing centers."

"The Supreme Court on Monday rejected an industry challenge to U.S. Environmental Protection Agency regulations issued by Republican former President George W. Bush's administration that set standards for ozone pollution."

"[Pennsylvania] State regulators did not consider available water chemistry test results and had limited knowledge of past spills and leaks at Range Resources’ Yeager Farm shale gas development site in Washington County before deciding the operation did not contaminate the nearby private water supply of Loren Kiskadden, according to testimony last week in the ongoing case before the state Environmental Hearing Board in Pittsburgh."