Born the 10 February 1946, he is a former green party leader in France, in 1990 founded the green party Ecology Generation. He was candidate for President of France in 1981 and later Environment Secretary of France (1988–90) and Environment Minister of France (1990–92).In 2007 Brice Lalonde was designated by the President of the French Republic Ambassador on Climate change and has been heavily invested in the multilateral climate change negotiations until the end of 2010, when he was designated by the UN Secretary-General Ban Ki-Moon, at the level of Assistant Secretary-General, Executive Coordinator of the United Nations Conference on Sustainable Development (Rio+20), which was held in Rio de Janeiro (Brazil) in June 2012.