ESS TIMELINE By culote Period: Sep 6, 1970 to Sep 7, 1970 Environmental Philosophy established Period: Sep 6, 1992 to Sep 7, 1992 Rio Earth Summit Period: Sep 6, 2002 to Sep 7, 2002 Johannesburg Earth Summit Period: Jan 1, 2012 to Dec 31, 2012 Rio 20+ "The future we want"