LA Times: Oklahoma regulators ordered more than three dozen oil and gas wastewater disposal wells to shut down after a magnitude 5.6 earthquake - matching the strongest ever to hit Oklahoma - struck Saturday morning and reverberated across the Great Plains, rattling even far-off Iowa.
People took to social media to report feeling the quake not just in Iowa but Missouri, Kansas, Texas, Arkansas and Nebraska. Oklahoma Gov. Mary Fallin declared a state of emergency in Pawnee County, epicenter of the quake....