Nobel Symposium No 31 on The Impact of Space Science on Man- kind was held at Spatind, Norway, September 7 - 12, 1975. Twenty- seven leading experts from the United States, the S.S.R. and Western Europe attended the Symposium. Four main subjects were discussed: The Impact of Space Science, introduced by Profe. ssor Reimar Lust; The Impact of Space Communica- tion, ihtroduced by Dr Joseph Charyk; The Impact of Earth Resources Exploration from Space, introduced by Dr William Nordberg; and The