Remembering the devastating eruption of Mt. St. Helens 42 years ago today

Remembering the devastating eruption of Mt. St. Helens 42 years ago today

Mt. St. Helens' eruption in Washington on May 18, 1980 is the worst volcanic eruption in U.S. history, killing 57 people and spewing 520 million tons of ash across the U.S.