'Swarm of microquakes' apparently hit Clintonville
(Newser) -
The mysterious booms heard in Clintonville, Wisconsin, had experts stumped—but there may be a simple explanation. "The mystery is solved. We have experienced an earthquake here in Clintonville," a city administrator explains. Geophysicists call it "swarm of microquakes," reports the Appleton Post-Crescent , and the administrator...