Victor R. Baker, Regents’ Professor of Hydrology and Water Resources and Planetary Sciences, University of Arizona, was the 1998 president of the Geological Society of America (GSA). His honors include Foreign Membership in the Polish Academy of Sciences; Fellowship in the AGU, EGU, and GSA; the David Linton Award of the British Society for Geomorphology; and Distinguished Scientist and Distinguished Career Awards from GSA. His 18 books and more than 375 research papers and chapters deal with the paleohydrology and geology of Mars, paleoflood hydrology, megafloods, and other aspects of the Earth and planetary sciences.