Stopping an earthquake before it starts? It sounds like a feat possible only for a superhero. But in Kansas and Oklahoma state policymakers are showing that insofar as humans are causing earthquakes, they can stop them, too. After restricting oil and natural gas operations in certain hotspots, Oklahoma is feeling an average of about two earthquakes a day, down from about six last summer, and Kansas is feeling about a quarter of the tremors it once did. Using a growing body of research, along with trial and error, scientists and state regulators are gradually getting closer to pinpointing the cause of the startling increase in earthquakes in the Central and Eastern U.S., and preventing them. The general cause, scientists have found, is not drilling, but what happens after, when operators dispose of wastewater that comes up naturally during the oil and gas extraction process. The operators inject the wastewater […]