A biography of two maverick scientists whose intellectual wanderlust kick-started modern genomics and cosmology. Max Delbrück and George Gamow, the so-called ordinary geniuses of Segrè's third book, were not as famous or as decorated as some of their colleagues in midtwentieth-century physics, yet these two friends had a profound influence on how we now see the world, both on its largest scale (the universe) and its smallest (genetic code). Their...