The USGS estimate of 143 million Americans at earthquake risk is almost twice the 75 million cited in a similar 2006 study.
Sources
- If You Think You're Safe From Earthquakes, You May Be ... (nationalgeographic.com)
- https://www.usgs.gov/news/featured-story/nearly-half-americans-exposed-potentially-damaging-earthquakes (usgs.gov)
- https://www.cbsnews.com/news/nearly-half-of-americans-at-risk-of-an-earthquake/ (cbsnews.com)
- https://pubs.usgs.gov/fs/2006/3016/2006-3016.pdf (pubs.usgs.gov)
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