"Living in the middle of a natural gas boom can be pretty unsettling. The area around the town of Silt, Colo., used to be the kind of sleepy rural place where the tweet of birds was the most you would hear. Now it's hard to make out the birds because of the rumbling of natural gas drilling rigs." ...

"A new report named the Potomac the nation’s most endangered river, saying it is threatened by nutrient and sediment pollution that lowers the quality of drinking water and kills marine life and will only get worse if Congress rolls back regulations in the Clean Water Act."

"PITTSBURGH -- The Pennsylvania Department of Health says it investigates every claim by residents that gas drilling has caused health problems, but several people say the agency's actions don't match its words."

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"In what the White House calls a milestone in its effort to cut red tape, the Obama administration today said it was overhauling or eliminating five regulations -- including a Clinton-era air-pollution rule -- in an effort to save $6 billion in unnecessary costs over the next five years."

"Long involvement in Canada's tar sands has been central to Koch Industries' evolution and positions the billionaire brothers for a new oil boom."

"Six U.S. senators are calling on the Environmental Protection Agency to immediately examine the health threats posed by forgotten factory sites featured in a recent USA TODAY investigation."

"The Environmental Integrity Project filed a Freedom of Information Act (FOIA) lawsuit Tuesday seeking details about dozens of White House meetings with interest groups to discuss Environmental Protection Agency regulations. The non-profit group, which advocates for the enforcement of environmental rules, filed the lawsuit after receiving no response from the White House Office of Information and Regulatory Affairs (OIRA) to a January FOIA request seeking more details on the meetings."

"CAMBRIA COUNTY, Pa. -- A pipe is spewing toxic water into Topper Run from the old Maryland No. 1 coal mine here."

"CHEYENNE, Wyo. -- Wyoming's governor persuaded the head of the U.S. Environmental Protection Agency to postpone an announcement linking hydraulic fracturing to groundwater contamination, giving state officials -- whom the EPA had privately briefed on the study -- time to attempt to debunk the finding before it rocked the oil and gas industry more than a month later, an investigation by The Associated Press has found."