USGS: Risk of 2016 quake increases, especially in Oklahoma

The ground east of the Rockies is far more likely to shake this year with damaging though not deadly earthquakes, federal seismologists report in a new risk map for 2016. Much of that is a man-made byproduct of drilling for ...

New Madrid fault system may be shutting down

(PhysOrg.com) -- The New Madrid fault system does not behave as earthquake hazard models assume and may be in the process of shutting down, a new study shows.