... become the subject of intense public controversy. We develop a three-part schema to make sense of risks of hydraulic fracturing and the responsibilities of engineers: the lab, the field, and the forum. In the lab, researchers seek to answer basic questions about, for example, the behavior of shale under...

...://creativecommons.org/licenses/by/4.0/ . methane climate change hydraulic fracturing The Marcellus Shale is a large-scale unconventional natural gas resource that underlies part of the Appalachian region. As of January 2015, the natural gas (NG) production rate in the Marcellus region was about 16...