SEATTLE (AP) — Officials are tracking the largest swarm of earthquakes in more than 15 years on Washington's Mount Rainier but say there is no indication that the cluster of quakes is cause for ...

The most alarming case may be West Antarctica, where more than 100 active volcanoes lie buried beneath the ice. One glacier ...

In central Oregon between Crater Lake and the Columbia River Gorge, Bend is a top outdoor destination. Travelers will find ...

What if the most telling indications of an impending volcanic eruption are buried deep under the ocean, or in a fleeting succession of tiny quakes that no one perceives? As volcanoes of the Pacific ...