The United Nations Conference on Sustainable Development (UNCSD) was organized in pursuance of General Assembly Resolution 64/236 (A/RES/64/236). The Conference took place in Brazil on 20-22 June 2012 marking the 20th anniversary of the 1992 United Nations Conference on Environment and Development (UNCED), in Rio de Janeiro, and the 10th anniversary of the 2002 World Summit on Sustainable Development (WSSD) in Johannesburg.