A new study shows that fracking has made Oklahoma as quake-prone as California.
A little something called the New Madrid Fault is making this ugly... Oklahoma is on the far western side of the fault zone, but the fault lies so close to the surface that any fracking activates it. The United States Geological Survey said the chance of a destructive quake in the next year is as great in north-central Oklahoma and southern Kansas as it is in the shakiest parts of quake-prone California. About seven million people live in the areas.
Oklahoma now ranks behind only Alaska in earthquake frequency, followed by California.