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June 25, 2014
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The researchers' findings are described in the June 27 issue of Science.
Natural gas extracted from a deep shale formation by hydraulic fracturing (fracking) technology burns at a well in Bradford County, Pennsylvania. Fracking is enabling a shale gas production boom, remaking energy markets and stoking environmental concerns. See page 1464.
Credit: Photo Copyright Les Stone - Corbis
Images credited to the National Science Foundation, a federal agency, are in the public domain. The images were created by employees of the United States Government as part of their official duties or prepared by contractors as "works for hire" for NSF. You may freely use NSF-credited images and, at your discretion, credit NSF with a "Courtesy: National Science Foundation" notation.
Additional information about general usage can be found in Conditions.
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