Every day, blocks of cooling rock tumble from the edges of a growing lava dome near the top of Great Sitkin Volcano, a ...

The Alaska Volcano Observatory raised Kupreanof Volcano's alert level to Advisory and its aviation color code to Yellow on ...

Add Yahoo as a preferred source to see more of our stories on Google. A recent earthquake swarm at Mount Rainier in Washington state, along with increased volcanic activity in Alaska, Oregon, and ...

Scientists worry that recent activity seen on a satellite at a volcano near a major U.S. city could spell disaster for ...

Alaska’s volcano experts no longer expect an eruption anytime soon from Mount Spurr, the closest active volcano to Anchorage. On Wednesday, the Alaska Volcano Observatory formally lowered the alert ...

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 ...

A circular scar on Alaska’s face speaks to an event that may have contributed to the fall of societies on the far side of the world. Two thousand years ago, Alaska’s Mount Okmok volcano spewed ash ...