A group of specialists briefly stopped by Sitka to attend to much-needed maintenance of tectonic shift-tracking equipment.

This year, the Earth’s core put on a show unlike any other, with volcanic eruptions that dazzled observers from every continent. Some of these eruptions were so breathtaking they left viewers ...

ANCHORAGE, Alaska — A remote volcano is again oozing lava into its ice-filled caldera, but the activity is no cause for alarm for nearby villagers, scientists said Wednesday. Seismic activity and ...

Dozens of people have died, hundreds are missing and many more homes were destroyed after separate volcanic eruptions in Hawaii and Guatemala that made headlines worldwide in recent months. And ...

Add Yahoo as a preferred source to see more of our stories on Google. When you think of the United States, images of sprawling cities and vast landscapes might come to mind, but not the hidden and ...

Volcanoes can erupt suddenly, but satellite technology now detects hidden ground shifts and heat changes. This helps scientists monitor remote volcanoes where ground sensors are scarce. These advanced ...

ANCHORAGE, Alaska (AP) — Officials lowered the alert level for a volcano near Alaska’s largest city to normal Wednesday, which they said indicates that Mount Spurr is “quiet” months after showing ...

Dumpling Mountain is the easiest place to enjoy a panoramic view of Katmai. The tundra-covered summit is 4.6 miles northwest of Brooks Camp, site of a summer visitors center and the hub of park ...

When you think of the United States, images of sprawling cities and vast landscapes might come to mind, but not the hidden and ever-present geological threat: volcanoes. While you might associate ...