Bill Hartmann is a senior scientist at Tucson's Planetary Science Institute. His book Desert Heart (1989) is an overview of the larger Pinacate region, and his novel, Cities of Gold (2002), re-creates the first European exploration of the Arizona-Sonora border region, including the Pinacate border country, by the Coronado expedition in 1539–1542. With space artist Ron Miller, he coauthored and coedited several books that used paintings effectively to tell the story of the universe's evolution as well as to inspire readers with the wonder of it all. These books include The Grand Tour: A Traveler's Guide to the Solar System, The History of the Earth, Cycles of Fire, and In the Stream of Stars: The Soviet/American Space Art Book. Currently, he is working on several new books, including an overview of Spanish exploration from Mexico into the Southwest, and an account of the geological roots of anti-science fundamentalism in American society.