The USGS identified 28 million people living in areas where 'pretty strong ground shaking' is expected within the next 50 years.
Notes on verification
Confirmed by USGS press release, peer-reviewed study (Jaiswal et al., 2015, Earthquake Spectra), and independent news coverage from multiple outlets. [tier=gold indep_score=0.95 clusters=3 claim_tier=notable]
Sources
- If You Think You're Safe From Earthquakes, You May Be ... (seed:environment_and_wildlife)
- https://www.cbsnews.com/news/nearly-half-of-americans-at-risk-of-an-earthquake/ (corroboration)
- https://www.usgs.gov/news/nearly-half-americans-exposed-potentially-damaging-earthquakes (corroboration)
- https://www.csmonitor.com/Science/2015/0818/Do-you-live-in-an-area-prone-to-quakes-You-might-be-surprised (corroboration)
- https://pubs.usgs.gov/publication/70155520 (corroboration)