Houston Chronicle | USGS forecasts high earthquake risk linked to oil and gas activity Houston Chronicle With the expansion of earthquake activity into middle America, an additional 7 million Americans are now at risk, the geological survey said. The states most likely to experience damage from quakes caused by oil and gas activity, in order, are ... Earthquakes caused by oil drillers are now so common that the government just assumes they're coming See How Oil Drilling Created an Earthquake Crisis in Oklahoma |