A major U.S. city is under threat from a potential volcanic eruption after more than 20 earthquakes were recorded in Alaska.

An explosion on Mount Spurr could generate massive cloud of ash, which could mess with airplanes and cause issues for humans.

Scientists have warned that the eruption in Anchorage, Alaska could happen within the next couple of weeks and cause aviation ...

An underwater volcano 300 miles off the coast of Oregon is displaying signs of a potential eruption, UW researchers found.

A "sharp, volatile-rich cap” about 2.5 miles under Yellowstone’s surface “acts like a lid,” trapping pressure and heat that ...

It’s one of the Pacific Northwest’s most active volcanoes – but there’s a good reason you’ve probably not heard of it before: ...

Things are heating up hundreds of miles off the coast of Oregon, where a large undersea volcano is showing signs of impending eruption, scientists say. The volcano, known as Axial Seamount, is located ...

An underwater volcano in Tonga dramatically changed the global climate by releasing massive steam, not just sulfur.