The federal government informed jittery Oklahoma residents, who have endured a stunning spike in earthquakes during the past few years, of something most of them already suspected — the risk of a damaging earthquake has dramatically increased, partly because of oil and gas drilling.
In an unusual move, the U.S. Geological Survey (USGS) and the Oklahoma Geological Survey issued a warning to state residents on Monday, informing them of a dramatically higher risk of a damaging magnitude 5.5 or greater earthquake than previously assumed. This higher risk needs to be taken into account when determining building codes, the USGS said. Read more...
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