| http://www.w3.org/ns/prov#value | - Think this is hard? -- Well, many European countries, including Germany and France, are already at half the level per person of the U.S. (In 2007, U.S. CO2 emissions were 19.3 Metric Tons per person; in Germany they were 9.6; in Sweden they were 5.4!) See Emissions by Country, World Bank.
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