Shing-Tung Yau has won many awards, including the Fields Medal. He is a professor of mathematics at Harvard University and lives in Cambridge, Massachusetts.Steve Nadis is a Contributing Editor to Astronomy Magazine. He has published articles in Nature, Science, Scientific American, New Scientist, Sky&Telescope, The Atlantic Monthly, and other journals. He has written or contributed to more than two dozen books. A former staff researcher for the Union of Concerned Scientists, Nadis has also been a research fellow at MIT and a consultant to the World Resources Institute, the Woods Hole Oceanographic Institution, and WGBH/NOVA. He lives in Cambridge, Massachusetts.