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Hydraulic fracturing, or fracking, opponents demonstrate as Joe
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Hydraulic fracturing, or fracking, opponents demonstrate as Joe Martens, commissioner of the New York State Department of Environmental Conservation, testifies before a joint budget hearing on the environment, in Albany. Martens says his agency has no "timetable" for finishing shale gas drilling rules, with the completion date dependent on recommendations made by the health commissioner. (Feb. 4, 2013)(Credit: AP)

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Fracking across the United States

Hydraulic fracturing has caused serious environmental concerns as well as Earthquakes across the United States