Lessons From Mount St. Helen's 35 Years Later
The eruption of Mount St. Helens on May 18, 1980 as seen from the east.
Flickr Photo/Washington DNR (CC-BY-NC-ND)
Marcie Sillman talks to Carolyn Driedger, a hydrologist and outreach coordinator for the U.S. Geological Survey, about what volcanologists have learned since Mount St. Helen's erupted 35 years ago and what other risks we face from Northwest volcanos.
