When you buy through links on our articles, Future and its syndication partners may earn a commission. Earth's crust is the planet's outermost layer. It is made of solid rock and sits on top of ...

About 55 earthquakes a day – 20,000 a year – are recorded by the National Earthquake Information Center. Most are tiny and barely noticed by people living where they happen. But some are strong enough ...

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 ...

(CNN) — Here’s a look at earthquakes worldwide. The US Geological Survey describes an earthquake as “the ground shaking caused by a sudden slip on a fault. Stresses in the earth’s outer layer push the ...

Southern California has been shaken by a series of earthquakes in recent weeks, raising concerns among residents about whether a major quake might be approaching sooner rather than later. “Certainly ...

A puzzling false earthquake alert sent Thursday morning to millions of California residents has left U.S. Geological Survey officials searching for answers about what triggered their sophisticated ...

Earth's crust is the planet's outermost layer. It is made of solid rock and sits on top of another layer, called the mantle. The mantle flows and stretches like bubble gum, while the crust above it ...