The vast, untapped natural gas reserves in Pennsylvania's Marcellus Shale are the subject of much debate. Scientists who are trying to shed light on the safety of drilling are facing a host of obstacles, including lack of funding and data. Susan Phillips Scientists who are trying to shed light on the safety of drilling are facing a host of obstacles.
Source: http://www.npr.org/2011/12/11/143543511/in-pa-drilling-comes-into-focus?ft=1&f=1007
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