EPA Declares Fracking, a Drilling Process, to be a Potential Source of Pollution from the Patriot-News [of Harrisburg]
"The U.S. Environmental Protection Agency announced today for the first time that fracking — a controversial method of improving the productivity of oil and gas wells — may be to blame for causing groundwater pollution. The draft finding could have a chilling effect in states like Pennsylvania trying to determine how to regulate the process."