The bombing of Hiroshima on August 6, 1945, brought radiation to international attention but the exact nature of what had been unleashed was still unclear to most. The 1986 meltdown at the Chernobyl nuclear plant again made headlines with estimates of fatalities ranging from 4,000 to almost one million deaths. By the time of the shocking 2011 disaster at the Fukushima nuclear plant social media meant governments and corporations no longer had a monopoly over the release of information, but transparency remains low on the agenda.

Meanwhile, few physicians give thought to the delayed health effects of radiation. It has been the bold physician who has challenged the potential overuse of chest X-rays, CT scanning, or PET scans. This book provides clear and accurate information about radiation so that we can all make informed choices. In clear language it offers answers to citizens' questions: What is radiation? Where do we encounter it? What are the benefits and risks? How do we develop a responsible future around the uses and abuses of radioactivity?