Factor 10
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Factor Ten refers to the possibility of creating products and services that have a massively lower resource intensity than the conventional alternative.
It evolved from the concept of Factor Four, as developed at the Wuppertal Institute for Climate, Environment & Energy. See: www.wupperinst.org/FactorFour. "FACTOR FOUR - Doubling Wealth, Halving Resource Use" was the title of the related book published by Ernst Ulrich von Weizsäcker, Amory and Hunter Lovins in 1995.
Factor Ten goes further as a response to the United Nations Environment Programme call for a tenfold reduction in resource consumption in the industrialised countries as a necessary long-term target if adequate resources are to be released for the needs of the developing countries (UNEP, Global Environmental Outlook 2000, 1999).