HMM: Injection wells in Arkansas shut down as earthquake concerns mount. Well, they’ve had some of the same concerns with geothermal power. No clear causal relationship here, but unlike some of the clearly-bogus concerns others have raised about “fracking,” this seems genuine enough to merit caution. Note that it’s only the ones in the immediate vicinity of a suddenly-shaky earthquake fault that have been stopped.

UPDATE: Reader Kent Budge comments: “Is this necessarily a good thing? Maybe it’s better to continue the injection to help the fault stresses bleed off gradually rather than in a single catastrophic slip.” Quite possibly, but at this point I don’t think we know enough to be sure.