Radiation, Risk and Ethics provides a theoretical and philosophical evaluation of why ethics matters for radiation protection, considering ethical questions such as harm, acceptability of risks, intention and the burden of proof. This includes a comprehensive introduciton to ethical theory, a discussion of the morally relevant aspects of actions linked to radiation exposure and an evaluation of radiation protection principles (including the latest ICRP recommendations) against ethical theory. A central thesis of the book is that ethics can be a tool to help improve the assessment and management of risks, illustrating the interaction between science, policy and values, and offering practical advice on risk evaluation for scientists, authorities and regulators.