Figure 1: Circular Flow Diagram

Figure 2: World Economy Embedded in World Ecosystem

Figure 3: From Ecosystem to Economy Source: Charles Hall

Figure 4: Herman Daly’s Definition of Sustainable Use of Resources

Figure 5: The Great Gap Source: Colin Campbell, Association for the Study of Peak Oil

Figure 6: Total Liquids Production and Net Energy Source: Colin Campbell, Association for the Study of Peak Oil

Figure 7: CO2 Level in Atmosphere Source: Charles David Keeling

Figure 8: Global Temperature Source: NASA