Ignacy Sachs (1927- ) acted as a special advisor to the secretary-general of the UN Conference on Human Environment in Stockholm in 1972 and of the UN Conference on Environment and Development in Rio in 1992. He was director of studies and professor at the Ecole des Hautes Etudes en Sciences Sociales in Paris, where he founded the International Research Centre on Environment and Development in 1973. He directed that centre until 1985, since which time he has been director of the Research Centre on Contemporary Brazil. He is a founding member of the International Foundation for Development Alternatives. He was born in Poland and educated at the Universities of Rio de Janeiro and Delhi and the Central School of Planning and Statistics in Warsaw.

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