HANOI, November 29, 2012 -- The U.S. Embassy Hanoi, and Green Innovation and Development Center (GreenID) organized a conference for thirty one participants of U.S. Government sponsored exchange programs under the theme: "Cooperation for a Sustainable Future" from November 29 to December 1, 2012. Participants are government officials, NGO leaders and researchers from Lower Mekong region countries, including: Laos, Cambodia, Thailand, Burma and Vietnam.