A professor in Pennsylvania makes a calculation, to discover that his state is sitting atop a massive reserve of natural gas—enough to revolutionize how America gets its energy. But another professor in Pennsylvania does a different calculation and reaches a troubling conclusion: that getting natural gas out of the ground poses a risk to public health. Two men, two calculations, and two very different consequences.
http://www.thisamericanlife.org/radio-archives/episode/440/game-changer
Penn State Reports on Marcellus : http://www.marcellus.psu.edu/resources/publications.php