Each mineral in a volcanic deposit is like a microscopic thermometer that records magma chamber temperature over time.

More than 2,000 earthquakes were recorded in one day. An underwater volcano off the coast of Oregon is gearing up for an eruption, according to volcanologists who are monitoring for activity. The ...

Hundreds of miles off the coast of Oregon, Deb Kelley watched a pod of dolphins swim past the research vessel Atlantis as the sun set on the Pacific Ocean. But beneath the calm seas lurked a behemoth: ...