SHING-TUNG YAU has been a professor of mathematics at Harvard since 1987. He has also worked at Stanford, the Institute for Advanced Study, and the University of California at San Diego. He has served as a visiting professor at the University of California at Berkeley, the California Institute of Technology, and Columbia. Yau has won many awards over the course of his career, including the Fields Medal, the National Medal of Science, a MacArthur Fellowship, the Crafoord Prize, the Veblen Prize, and the California Scientist of the Year. In 1993, he was elected to the National Academy of Sciences. He is the editor or serves on the editorial board of 10 mathematics journals. He has published more than 250 articles and written and edited more than 20 books. A highly sought-after lecturer, Yau is frequently interviewed for radio, TV, and print media stories.