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Greenhouse gases released from coal or hydraulic fracturing: researchers tussle over which is greater

Michael Allan McCrae | December 27, 2011 | 3:47 pm Energy Europe Coal 

A Pennsylvania research group has challenged the findings from Cornell University, which found that the carbon footprint of natural gas derived from shale is greater than the production of coal. Wilkes Unversity's Institute for Energy and Environmental Research for Northeastern...

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