Back in the United States, in Oklahoma, a strong 5.0-magnitude earthquake struck the city of Cushing on Sunday evening, knocking out power, rupturing gas lines and partially collapsing buildings. Cushing bills itself as the “Pipeline Crossroads of the World” and is home to above-ground tanks that store millions of barrels of crude oil. Scientists believe that wastewater disposal wells from oil and gas “fracking” are linked to the dramatic rise in earthquakes in Oklahoma in recent years.