Mount Saint Helens Lessons

NPR's Howard Berkes reports on what scientists have learned about volcanoes in the 20 years since the eruption of Mt. St. Helens. By watching the explosion and its aftermath in real time, they've learned more about the prediction and behavior of volcanic eruptions. That's led them to re-evaluate the dangers of a volcanically active area of California.



Please keep your community civil. All comments must follow the Community rules and terms of use, and will be moderated prior to posting. NPR reserves the right to use the comments we receive, in whole or in part, and to use the commenter's name and location, in any medium. See also the Terms of Use, Privacy Policy and Community FAQ.

NPR thanks our sponsors

Become an NPR sponsor

Support comes from