U.S. Caps Emissions in Drilling for Fuel
Ruth Fremson/The New York Times
New federal air pollution standards are the first covering hydraulic fracturing, or fracking, in places like Susquehanna County, Pa.
JOHN M. BRODER
Published: April 18, 2012
link-
http://www.nytimes.com/2012/04/19/science/earth/epa-caps-emissions-at-gas-and-oil-wells.html