50 years ago, scientists tried to control earthquakes with earthquakes
Excerpt from the February 8, 1969 issue of Science News

SHAKIER GROUND Oklahoma has experienced an increase in earthquakes since 2009, including a magnitude 5.7 earthquake in 2011 that damaged homes like this one. Scientists think that quake may have been caused by wastewater injections into the ground.
Brian Sherrod/USGS