Learn about the amazing natural forces that help shape our planet in the Volcanoes and Earthquakes gallery. From the casts of victims from the Mount ... Follow our simple guide to building a bird ...

Earthquakes are caused by the breaking and shifting of rock beneath the earth’s surface. They can strike without warning and can occur at any time. In the U.S., 45 states and territories are at ...

MORE: Mile-deep underwater volcano could erupt off West Coast this year, scientists say Small earthquakes have been occurring above ground at Mount Spurr since April, leading to odds of eruption ...