A lot more of the continent than most people think! Further reading: https://www.usgs.gov/news/featured-story/nearly-half-americans-exposed-potentially-damagi

A lot more of the continent than most people think! Further reading: https://www.usgs.gov/news/featured-story/nearly-half-americans-exposed-potentially-damaging-earthquakes https://www.usgs.gov/news/featured-story/nearly-half-america...