March 15, 2011. Developing Natural Gas in the Marcellus and other Shale Formations is likely to Aggravate Global Warming. Bob Howarth, Rene Santoro, and Tony Ingraffea. Presentation in advance of the release of a long anticipated peer reviewed study of the relative contribution to global warming by greenhouse gas emissions from conventional and un-conventional gas production compared with coal. Sponsored by Department of Ecology & Evolutionary Biology, and School of Civil & Environmental Engineering, Cornell University.