Search Result

Search Tags:  Bill Ellsworth

USGS: Glut of quakes likely manmade, fracking possible cause

Last year saw a sharp rise in 3.0-magnitude quakes or stronger in the U.S. midcontinent, a continuing trend that prompted the U.S. Geological Survey -- the government's main source for Earth sciences -- to investigate the root cause.

Monday - 04/16/2012, 02:51pm EDT

Tags: USGS, fracking, earthquake, quake, David J. Hayes, Paul D. Shinkman