Slides 2-4: U.S. Energy Information Administration, International Energy Statistics; World Energy Council, World Energy Resources Survey. Slides 5-7: Intergovernmental Panel on Climate Change, 5th Assessment Report; Oak Ridge National Laboratory, Carbon Dioxide Information Analysis Center; BP Energy Statistics; R.A. Houghton and J. L. Hackler, “Annual Flux of Carbon from Land Use and Land-Cover Change 1850 to 2010,” Global Biogeochemical Cycles; Le Quéré, et al., “The Global Carbon Budget 1959 – 2011,” Earth System Science Data; U.S. Energy Information Administration, International Energy Statistics; World Energy Council, World Energy Resources Survey. Slide 8: U.S. Energy Information Administration, International Energy Statistics