Share this postPETITIONChart of the Week III: OK EarthquakesCopy linkFacebookEmailNotesMoreChart of the Week III: OK EarthquakesJun 29, 2017∙ PaidShare this postPETITIONChart of the Week III: OK EarthquakesCopy linkFacebookEmailNotesMoreShareEarthquakes and Oklahoma. Lots of waste water disposal happening there (though the regulators are curtailing it now a bit) starting right around the time that dark brown line spikes up. Causation or correlation?This post is for paid subscribersSubscribeAlready a paid subscriber? Sign inPreviousNext