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 20/ R. Kerr. 'Taking Shots at Ozone Role Theories' Science, 14 November 1986.

21/ When the speed of a satellite matches the speed of the planer's rotation, the satellite is stationary relative to particular places on the Earth. There is only one band or directly above the equator, where it is possible to achieve geosynchronous orbit.

22/ The general case for a regulatory regime and several alternative 'egimes are spelled out in K.G. Gibbons, 'Orbital Saturation: The Necessity for International Regulation of Gsosynchronou Orbits', California Western International Law Journal, Winter 1979

23/ A summary of Third World views is found in H.J. Levin, 'Orbit and Spectrum Resource Strategies: Third World Demands', Telecommunications Policy, June 1981.

24/ The allocation is done every 10 years at World Administrative Radio Conferences (WARCs), the last of which was held in 1979. U.S. Congress, Office of Technology Assessment, Radiofrequency Use and Manaqement: Impacts from the World Administrative Radio Conference of 1979 (Washington, DC: U.S. Government Printing Office, 1980).

25/ These conferences are described in G. Coding, Jr., 'The USA and the 1985 Space WARC'. and A.M. Rutkowski, 'Space WARC: The Stake of the Developing Countries, the GEO and the WARC-ORB 85 Conference', Space Policy, August 1985.

26/ AIAA Technical Committee on Space Systems, Space Debris, July 1981.

27/ The United States has launched 23 spacecraft that relied at least in part upon nuclear power sources: one source was a reactor; the rest were radioactive materials the decay heat of which is converted into electricity (thermoelectric generators). By the end of 1986 the Soviet Union had launched 31 nuclear-powered spacecraft, almost all of which contained fission reactors, and it currently operates all of the reactor-powered satellites.

28/ 'Antarctic: A Continent in Transition', Fact Sheet Folio, International Institute for Environment and Development, London. 1986.

29/ In 1983, the Seventh Summit Conference of the Non-Aligned Countries included a paragraph on Antarctica in its communique. That same year, the question of Antarctica was put on the agenda of the UN General Assembly. The debate resulted in a consensus resolution asking for the elaboration of a special report by the Secretary General, which was debated by the UN General Assembly at its 39th Session in November 1984. The consensus has not been maintained. At /…