Every year, the Earth shakes thousands of times. Most of those tremors go unnoticed, felt only by sensitive instruments buried deep in the ground. Occasionally, though, one of them tears apart cities, ...

Earthquakes happen daily, sometimes with devastating consequences, yet predicting them remains out of reach. What scientists can do is map the hidden layers beneath the surface that control how ...

Climate journalist Emma Pattee has been worried about the so-called big one—an off-the-charts earthquake—hitting her town in Portland, Ore., for some time now. She’s not alone: scientists estimate at ...