After World War II, the US Atomic Energy Commission (AEC) began mass-producing radioisotopes, sending out nearly 64,000 shipments of radioactive materials to scientists and physicians by 1955. Even as the atomic bomb became the focus of Cold War anxi...

During the seventeenth and eighteenth centuries, Europeans raised a number of questions about the nature of reality and found their answers to be different from those that had satisfied their forebears. They discounted tales of witches, trolls, magic...