Figure 11 - US GDP Per Capita has roughly doubled since 1970, while energy use and CO2 emissions per capita have dropped slightly. More wealth does not have to mean more consumption or more ... more 
Figure 11 - US GDP Per Capita has roughly doubled since 1970, while energy use and CO2 emissions per capita have dropped slightly. More wealth does not have to mean more consumption or more pollution. Source: World Bank. less 
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Scientific American
Thu, Apr 18, 2013 7:50 AM EDT