RealClearEnergy - Injection Wellshttp://www.realclearenergy.org/topic/topic.php?id=26439Injection WellsTopic Ohio Earthquakes Likely Caused by Fracking http://www.scientificamerican.com/article.cfm?id=ohio-earthquake-likely-caused-by-fracking Mark Fischetti, Sci. Amer. 100243989 Entries Thu, 05 Jan 2012 00:00:00 -0500 118604