I was shocked last August when my friend told me that an earthquake shook his office building in Dutchess County, NY. It was yet another strange event to place alongside hurricane Irene and the blizzard in October. The earthquake made me think of something- have you ever considered the possibility of a link between earthquakes and oil and gas extraction? Well, it turns out that the US Geological Survey has. According to a recent study, mid-continent earthquake occurrence (magnitude 3 and greater) increased six-fold between 2001 and 2011 compared to the 20th century average. The report almost certainly link this increase to anthropogenic causes, pointing to changes in extraction method, ie. the use of hydrofracking. We don’t have too much information now, so keep your eye out for the proceeding full report.