A powerful magnitude 7.7 earthquake struck off the coast of Indonesia early Saturday, damaging buildings and homes, and triggering a tsunami warning. Authorities urged people on affected coastlines to

Whenever there's a series of destructive or notable earthquakes, scientists get asked the same question: Are earthquakes becoming more frequent?

Volcanoes emit smoke. Beneath a volcano lies a huge chamber filled with liquid magma. A series of earthquakes means an eruption is imminent. And if a "supervolcano" like Yellowstone were to awaken, a

Large earthquakes can dramatically reshape mountain landscapes by triggering thousands of landslides and rapidly accelerating erosion. However, the reasons why some mountain regions experience intense