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

Volcanoes across the country are beginning to wake up and erupt, and no one has a good explanation for why it's happening.

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

Melting glaciers may be setting off a chain reaction deep beneath our feet. Scientists have found that as glaciers retreat ...

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

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

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.

An earthquake of magnitude 6.2 struck Alaska on Monday, according to the National Center for Seismology (NCS). The earthquake ...

The giant earthquake was recorded at 12:37 p.m. local time, southeast of Sand Point, a community located on Popof Island in ...

Alaska experienced a 6.2 magnitude earthquake at a shallow depth of 48km on Monday, following a previous 7.3 magnitude quake.