Mount St. Helens erupted, killing dozens and forever changing how the US monitors earthquakes. The volcano is still active ...

On May 18, 1980, the United States experienced the deadliest and most destructive volcanic eruption in its history.

Oxford researchers found that changes in shear-wave splitting can predict volcanic eruptions and their severity. The signal shifted noticeably before a major eruption at Ontake Volcano, offering a ...

The anniversary of the eruption of Mount St Helens gives so many pause, recalling where they were that day, May 18, 1980.