John Dvorak worked on volcanoes and earthquakes for the US Geological Survey,
first at Mount Saint Helens then as a series of assignments in California,
Hawaii, Italy, Indonesia, Central America, and Alaska. He has written cover
stories for Scientific American,
Physics Today, and Astronomy magazines, as well as a
series of essays about earthquakes and volcanoes for American Scientist.
Dvorak has taught at the University of Hawaii and lectured at UCLA, Washington
University in St. Louis, the Lunar and Planetary Institute, and the
Smithsonian Institution, among others.
