Howarth, Ingraffea Shale Gas Study on Global Warming Discredited by U.S. Department of Energy

A little more than a month ago, Robert Howarth, a Cornell University professor of ecology and environmental biology, along with two other Cornell professors, Renee Santoro and Tony Ingraffea, published a peer-reviewed study in the journal Climate Change titled, “Methane and the greenhouse-gas footprint of natural gas from shale formations.” The study evaluates natural gas from shale compared with other energy sources with respect to how much “greenhouse gases” are created during the extraction process. The study makes the claim that shale gas extraction is actually worse for the environment than burning coal because of greenhouse gases.

The initial media reaction was a breathless Paul Revere-style recitation of the slug “shale gas worse for global warming than coal.” Howarth’s paper has now been roundly refuted by none other than the U.S. Department of Energy’s National Energy Technology Laboratory. Howarth, Santoro and Ingraffea’s conclusions are based on assumptions rather than hard data, and those assumptions were wrong.

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