Stories by Arch C. Johnston

Earthquakes can strike even in stable crust, well away from the familiar earthquake zones at the edges of tectonic plates. What accounts for these enigmatic events?

Three of the strongest quakes in U.S. history were not in the West but in New Madrid, Mo. They came in 1811 and 1812, and even now the area is shaken by an average of one small quake every other day