Theorists consider the evolution of human society and question the sustainability of the current paradigm.
June 16, 1971 in USA
18 November 1939, Ottawa, Ontario, Canada
3 April 1934, London, England, UK
14 October 1946, Salt Lake City, Utah, USA
8 January 1942, Oxford, Oxfordshire, England, UK
24 March 1936, Vancouver, British Columbia, Canada

