OKLAHOMA CITY (AP) — A 5.8-magnitude earthquake and a series of smaller aftershocks in Oklahoma led to the discovery of a new fault line and stoked fears among some scientists about activity along other unknown faults that could be triggered by oil and gas wastewater that's being injected deep underground. State and federal regulators on Monday said 32 disposal wells in northeastern Oklahoma must shut down because they are too near the newly discovered fault line that produced the state's strongest earthquake on record on Sept.Read more on NewsOK.com