INIS, the International Nuclear Information System, is the world´s leading information system on the peaceful uses of nuclear science and technology. INIS is operated by the International Atomic Energy Agency (IAEA) and contains not only bibliographic references but also a large collection of full text documents. There are central areas to the scope such as nuclear reactors, reactor safety, nuclear fusion, applications of radiation and radioisotopes in medicine, agriculture, industry and pest control as well as related fields such as nuclear chemistry, nuclear physics and materials science. Special emphasis is placed on the environmental, economic and health effects of nuclear energy. Legal and social aspects associated with nuclear energy are also covered. And, from 1992, the economic and environmental aspects of all non-nuclear energy sources are included in the scope.