This booklet explains the basic technology of nuclear fission power reactors, the nuclear fuel cycle, and role of nuclear energy as one of the domestic energy resources being developed to meet the national energy demand. Major topic areas discussed include: (1) "The Role of Nuclear Power"; (2) "The Role of Electricity"; (3) Generating Electricity with the Atom"; (4) "Nuclear Power and Radiation"; (5) "Types of Nuclear Reactors (boiling-water, pressurized-water, and high temperature gas-cooled reactors)"; (6) "Breeder Reactors"; (7) "Nuclear Fuel-mining to Reactor"; (8) "Nuclear Fuel-reactor to Waste Disposal"; (9) "Transporting Radioactive Materials"; (10) "The Economics of Nuclear Power"; (11) "Nuclear Electricity in Other Countries"; and (12) a conclusion. Lists are included for selected books, reports, articles and pamphlets, films, and illustrations, and a glossary of related terms. (RT)