Erwin Schrodinger's book What is Life?, which was originally delivered as a set of lectures at Trinity College, Dublin, is perhaps one of the most important scientific books of the twentieth century. It marked the beginning of molecular biology, and stimulated scientists such as Watson and Crick to explore and discover the structure of DNA. The novelty and appeal of What is Life? is that Schrodinger addressed the central problems of biology--heredity and how organisms use energy to maintain order--from a physicist's perspective. Fifty years later, at Trinity College, a number of outstanding...