Nuclear power produces almost a fifth of the world's electricity. Supporters say it's safe, cheap and best of all the answer to global warming. Critics say it's not safe, or cheap. And it won't really help with the global warming problem. So who's right? Nuclear Energy: The Issues presents the arguments for and against, with relevant background information. The science behind nuclear power what nuclear fission is, how a nuclear power station works and the 'nuclear fuel cycle' is explained in more detail in Nuclear Energy: The Science.