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USGS Revises Seismic Risk Map to Include Quakes Caused by Humans

Earthquakes caused by human activity will now be included in the U.S. Geological Survey's seismic risk maps, the agency said on Monday after a sharp rise in temblors linked to wastewater disposal wells used by the oil and gas industry in Oklahoma. The seismic risk maps are used by emergency management officials as well as the country's major engineering and design associations to guide how strong to construct buildings. "By including human-induced events, our assessment of...

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