Information Sources
- 1 The price of oil (1998-2008 - All countries Spot Price $/Barrel January - source: US Energy Information Administration)
- 2 US oil imports as percentage of total oil consumption (1998-2007 - Source: US EIA)
- 3 Increase in global CO2 emissions (Million Metric Tons of Carbon - Source: Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory)