This publication is the sixth in a series of papers on global environmental issues. This paper evaluates the future of nuclear power, subjecting it to several tests: (1) economics; (2) safety; (3) adequacy of fuel supplies; (4) environmental impact; and (5) both national and international security. Section headings include: (1) The nuclear fuel cycle; (2) Nuclear economics; (3) Uranium supplies; (4) Safety; (5) Environmental impact; (6) Energy independence; (7) Nuclear terrorism; and (8) Nuclear power and society. This paper suggests that nuclear power may not only be unsafe but uneconomical. Among other examples are several cases of near catastrophic nuclear accidents of which the public was told nothing until the crictical periods had passed. (MR)