Fig. 1. Millennium Ecosystem Assessment (MA) world population scenarios. Each curve corresponds to one of the four MA scenarios: Order from Strength (OS), Adaptive Mosaic (AM), TechnoGarden (TG), and Global Orchestration (GO). The International Institute of Applied Systems Analysis (IIASA) data are from Lutz and Goujon (2001). The UN data are from UN (2002). From "Ecosystems and Human Well-being: Scenarios, Volume 2" by Steve R. Carpenter, et al., eds. Copyright (c) 2005 Millennium Ecosystem Assessment. Reproduced by permission of Island Press, Washington, D.C.