N​early 75% of the country is at risk for a potentially damaging earthquake, according to a recently updated USGS map.
A 3.8-magnitude earthquake struck near York Harbor, Maine, early Monday, sending tremors as far south as Boston and as far ...
The map is the first to include all 50 states in a single USGS assessment ... shows a range of earthquake probability across the U.S. Well known high-risk areas, such as California and Alaska ...