A new study reveals that Earth's biomes changed dramatically in the wake of mass volcanic eruptions 252 million years ago.

In the shadow of Alaska's bustling city, Mount Spurr whispers of its ancient power. Elevated gas emissions suggest a restless ...

“It is also possible that an eruption could occur with little or no additional warning,” the Alaska Volcano Observatory ...

Increasing volcanic activity at the over 11,000-foot-tall, snowcapped volcano in Alaska is likely a sign of its impending first eruption since 1992, experts say. Mount Spurr, located about 75 miles ...

Alaska's Mount Spurr, an active volcano near the most populated region in the state, is getting even closer to an eruption, ...

Volcanologists at the Alaska Volcano Observatory have been monitoring volcanic unrest since April of last year.

The Alaska Volcano Observatory on Wednesday said Mount Spurr is at risk of erupting within the next few weeks or months, potentially impacting residents 78 miles away in the city of Anchorage.

In a remote corner of the U.S., active volcanoes wait patiently above the ridgelines, leaving residents on edge.