The Mountains of Saint Francis: Discovering the Geologic Events That Shaped Our Earth (St. Francis)
Walter Alvarez is a professor of geology at the University of California,  Berkeley, and the author of the best-selling  T. Rex and the Crater of Doom. He is a  Fellow of the National Academy of Sciences and a past recipient of the Penrose Medal, the highest  award given by the Geological Society of  America. He lives in Berkeley, California.