The 1980 Mount St. Helens eruption began with a steady series of earthquakes in March. By April it began spewing smoke, ...

The volcano is thousands of feet below the ocean’s surface, so it poses no danger to people. But under all that water, a ...

Learn more about the impending Axial Seamount eruption and how the organisms around the underwater volcano may benefit from ...

From mighty rivers to high mountain peaks, most of the West Coast’s search-and-rescue programs rely entirely on volunteers.

Researchers are watching the most active volcano in the Pacific Northwest and now say that the volcano is swelling up like a balloon full of lava.

Flashback: After months of blowing off steam, the mountain erupted at 8:32am, killing 57 people, blotting out the sun across ...