(CNN) — Tens of millions of Americans live in places with a high earthquake risk, many of them in large metropolitan regions, such as Los Angeles, where major seismic events would also be costly to ...

SAN FRANCISCO – Was that an earthquake you just felt or merely a big truck rumbling by? You don't have to wonder – the U.S. Geological Survey is on the case and can almost immediately tell you whether ...

This map depicts the predicted types of soil in Tokyo with an unprecedented level of detail. Such maps are essential for urban planning and earthquake risk assessment, as they reveal areas that are ...