Yale University Press published a book by Irwin Shapiro, entitled, The Unity of Science: Exploring Our Universe, from the Big Bang to the Twenty-First Century (October 31, 2023), based on a Harvard University undergraduate course for nonscientists that Prof. Shapiro invented and has taught each spring for the past 15 years. The book provides a broad and entertaining survey of major scientific discoveries that have changed our views of nature and, in turn, spawned further questions. Irwin is now 94 and still going strong.