Radiation Evangelists explores X-ray and radium therapy in the United States and Great Britain during a crucial period of its development, from 1896 to 1925. It focuses on the pioneering work of early advocates in the field, the "radiation evangelists" who, motivated by their faith in a new technology, trust in new energy sources, and hope for future breakthroughs, turned a blind eye to the dangers of radiation exposure. Although ionizing radiation...