"PITTSBURGH — Where 600 flights used to take off and land every day here at Pittsburgh International Airport, there are now about 300. Partway down Terminal B, the moving sidewalk that used to lead to a dozen gates now stops abruptly at a plain gray wall."

"Seventy miles off Ocean City, scientists aboard the federal research vessel Henry B. Bigelow are exploring a lush underwater landscape that until recently few would have imagined — colorful corals clinging to the rocky slopes of deep-sea canyons."

"CHARLESTON, West Virginia — When coal-cleaning chemicals seeped into West Virginia's biggest water supply in January, the city of Cincinnati had a decision to make 200 miles downstream."

"Eight Democratic members of Maryland's congressional delegation wrote President Obama Monday urging him to reconsider his administration's plan to allow seismic testing for oil and gas off the mid-Atlantic coast."

"A Baltimore-based company wants to spread waste called industrial sludge on more than 16,000 acres of farm fields in seven Virginia counties, including Hanover and Goochland, but opponents have raised such a stink that Virginia officials are taking extra time to consider the issue."

"Pennsylvania has 86,000 miles of rivers, streams and creeks — a total length eclipsed only by the vast wilderness in Alaska."

"The last thing Rodney Donald was expecting during his family’s vacation on the Chesapeake Bay was to almost lose a leg to an aggressive bacteria growing in the brackish waters."

"Oil and gas operations have damaged Pennsylvania water supplies 209 times since the end of 2007, according to official determinations compiled by the Department of Environmental Protection that the agency is preparing to release for the first time."

"At least $2.9 million could fuel studies in a proposed settlement between West Virginia businesses and residents and the company that contaminated their water supply."

"The scientists want to be very clear: They are not saying we should build a storm-surge barrier across the mouth of the Chesapeake Bay."