Originally trained as a lunar scientist, John Dvorak spent twenty years operating a large telescope at Mauna Kea for the Institute for Astronomy, University of Hawaii. He has written cover stories for Scientific American, Astronomy, and Physics Today. His books include Earthquake Storms and The Last Volcano.
An award-winning audio engineer for over forty years, Tom Perkins has expanded his skills to narrating and has more than sixty titles to his credit. He learned by working with the world's best voice talent during his career, and he continues to engineer a variety of projects.