Michael S. Reidy, PhD, is assistant professor of history in the Department of History and Philosophy at Montana State University, Bozeman, MT, specializing in the history of geophysical sciences in the 19th century.Gary Kroll, PhD, is assistant professor of history at State University of New York–Plattsburgh, Plattsburgh, NY, where he teaches courses on environmental history and the history of science.Erik Conway, PhD, is a visiting historian at NASA's Langley Research Center, Hampton, VA. He received his degree from the University of Minnesota.

Recommended. General readers; lower- and upper-division undergraduates.

Michael S. Reidy, PhD, is assistant professor of history in the Department of History and Philosophy at Montana State University, Bozeman, MT, specializing in the history of geophysical sciences in the 19th century.Gary Kroll, PhD, is assistant professor of history at State University of New York–Plattsburgh, Plattsburgh, NY, where he teaches courses on environmental history and the history of science.Erik Conway, PhD, is a visiting historian at NASA's Langley Research Center, Hampton, VA. He received his degree from the University of Minnesota.

Recommended. General readers; lower- and upper-division undergraduates.

Michael S. Reidy, PhD, is assistant professor of history in the Department of History and Philosophy at Montana State University, Bozeman, MT, specializing in the history of geophysical sciences in the 19th century.Gary Kroll, PhD, is assistant professor of history at State University of New York–Plattsburgh, Plattsburgh, NY, where he teaches courses on environmental history and the history of science.Erik Conway, PhD, is a visiting historian at NASA's Langley Research Center, Hampton, VA. He received his degree from the University of Minnesota.

Recommended. General readers; lower- and upper-division undergraduates.