Nuclear energy will inevitably become an important issue worldwide in the 21st century. It pollutes the environment, with consequences that are highly controversial; and it generates plutonium — the essential component of nuclear weapons. At the same time, it is a realistic alternative to at least some of the expected huge increase in global demand for fossil-fuel burning, which itself is a major source of environmental pollution, and not least of “greenhouse” gases.This invaluable book attempts to provide, for the non-technical reader, an objective and critical account of the main issues involved. The authors are authorities in their own fields, and their contributions have been read in manuscript, discussed and criticised by a wider, international group of experts. Thus, whilst much of its contents may arouse controversy, the book should be an excellent starting point for informed public discussion of a vitally important topic.