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.

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

A volcanic eruption in Iceland forced the evacuation of the Blue Lagoon spa and the town of Grindavík as lava is flowing through a fissure on the Reykjanes Peninsula.