A potent introduction to chemistry's role in today's world by a skilled trail-blazer, Bernard Jaffe, who wrote Men of Science in America and Crucibles, The Story of Chemistry, this traces in some detail the paths of the pioneers responsible for many vaccines in common use and explains the ways in which chemistry reaches into every phase of every day life, with its applications in soil-fertilization, health and hygiene; the development of antibiotics and its recent uses in development of synthetic rubber, cloth and fuel. The author has a rare faculty for making technical matter truly interesting. He relates chemistry to the life his young readers know without talking down to them. There is a sound explanation of atomic energy and the men who brought our knowledge of its potential to its present state. Valuable.