Oklahoma is experiencing an earthquake epidemic this year. 34 have been recorded in the past 7 days. Authorities are pussyfooting around the issue and saying there may be a connection to deep well disposal of wastewater from fracking operations. There should be no question about it--this is the cause and the problem won't go away as long as the injection disposal continues.
The only scarier thing than the earthquakes is what will happen to the toxic wastewater if the deep well injection disposal is halted.