Renowned American volcanologist who perished during the eruption of Mount St. Helens in Washington in 1980. He is widely credited with advancing the science of volcanic eruption prediction.
He was originally a Journalism major at the University of Illinois at Urbana-Champaign but later changed his major to Geology.
His life and work have been depicted in fictional films like 1981's St. Helens and in documentaries like 1980's The Eruption of Mount St. Helens.
His parents are Thomas and Alice Johnston. He was never married.
He and Thomas Jaggar are both world-famous volcanologists.