America's scientific giants of the 20th century have transformed the world in terms of scientific understanding, military preparedness, and the quality and comfort of our daily lives. In this exquisitely written book, Anthony Serafini, a respected historian and philosopher of science, regales the reader with vivid descriptions of the lives and contributions of the men and women who explored the depth of molecular structure, relativity, astronomy, quantum mechanics, nuclear research, and much, much more.