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Published online by Cambridge University Press: 24 August 2009

* Adapted from Connect, the UNESCO—UNEP Environmental Education Newsletter, in which it followed a preamble stating that it was from ‘the historic United Nations Conference on Environment and Development, held in Rio de Janeiro, Brazil, 3–14 June 1992.’ Over one hundred heads of state and government attended, as did delegates from more than 170 countries, virtually all pledged to preserve the endangered planet and its protective envelope — to the great credit of the organizer, Maurice F. Strong, of Canada, who evidently made them do their homework. — Ed.