PBS
Can We Predict Eruptions?
How did scientists know that Mount St. Helens was going to erupt? Discover the toolkit that volcanologists use to predict eruptions.
PBS
Nova: Volcano Swat Team
After the eruption of Nevado del Ruiz killed more than 23,000 people in Colombia in 1985, the U.S. Office of Foreign Disaster Assistance asked the U.S. Geological Survey to design a program to help foreign governments cope with volcano...