Oklahoma scientists say daily earthquakes are linked to the oil and gas industryRaw Story said:Oklahoma geologists have documented strong links between increased seismic activity in the state and the injection into the ground of wastewater from oil and gas production, a state agency said on Tuesday.
Oklahoma has went from lest than 2 earthquakes a year before 2008 to more than that in one day. I would say there is a link between fracking and earthquakes. Either that or something major and earth shattering, excuse the pun, is going on under their feet.
Of course the oil and gas industry thinks more studies should be done. I guess the ground hasn't cracked open under their feet yet.