A view of the volcanic eruption by the Sundhnúkagigjarö íur volcano, in Grindavik, Iceland, Wednesday, 16 July.

From Mount St Helens in Washington to the Mauna Loa in Hawaii, these structures have a complicated history of disaster and beauty.

Lava in Hawaii, seismic shaking in Alaska and underwater rumblings near Oregon. Scientists say it’s not the end of the world, but it’s definitely worth watching.

There is no danger to Oregon and Washington, but the advisory applies to coastal areas between Kennedy Entrance and Unimak Pass.

A seismologist from Seattle discussed recent volcanic activity across the United States. Here's what you should know.

Samples of extremely small crystal clots, each polished to the thickness of a human hair or thinner, have revealed ...

A volcanic eruption in southwest Iceland has prompted evacuations, including at nearby tourist sites like the Blue Lagoon.

A tsunami warning has been issued for south Alaska and the Alaska Peninsula after a massive 7.3-magnitude earthquake, ...

The rescission bill to defund the Corporation for Public Broadcasting and slash foreign aid cleared a procedural hurdle ...

Volcanoes are rumbling as scientists monitor earthquakes at Washington's Mount Rainier and Alaska's Iliamna volcano.

New reports suggest the Iliamna Volcano in Alaska is rumbling after 100 years of dormancy, but NASA says an eruption isn't ...