Updates to the recent US geological survey show that certain areas face a higher threat of earthquakes than previously thought.

“USGS earthquake science is vital because you can’t plan for earthquakes if you don’t know what you are planning for,” said Mark Petersen, chief of the USGS National Seismic Hazard Mapping Project, in a statement. “Our nation’s population and exposure to large earthquakes has grown tremendously in recent years. The cost of inaction in planning for future earthquakes and other natural disasters can be very high, as demonstrated by several recent damaging events across the globe.

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