Recent earthquakes in Colorado and elsewhere were induced by a drilling procedure to dispose of wastewater, federal geologists planned to argue in a report announced Wednesday.
The controversial practice of hydraulic fracturing to extract natural gas does not pose a high risk for triggering earthquakes large enough to feel, but other types of energy-related drilling can make the ground noticeably shake, a major government science report concludes.
The earth has been shaking in southern Colorado again after a magnitude 4.0 earthquake struck near the New Mexico-Colorado border Monday evening.
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