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In 2012 the United Nations will convene the United Nations Conference on Sustainable Development, also known as Rio 2012 or Rio+20, hosted by Brazil in Rio de Janeiro, as a 20-year follow-up to the historic 1992 United Nations Conference on Environment and Development (UNCED) that was held in the same city. The conference is organized by the United Nations Department of Economic and Social Affairs. The decision to hold the conference in 2012 in Rio de Janeiro was made by UN General Assembly Resolution A/RES/64/236 on 24 December 2009. (via DBpedia)