The U.S. Environmental Protection Agency (EPA) has updated the national greenhouse gas inventory through reporting year 2006 ( U.S. Greenhouse Gas Emissions and Sinks: 1990-2006), reporting that overall emissions during 2006 decreased by 1.1 percent from the previous year. Emissions grew 14.7 percent from 1990 to 2006. The decrease in 2006 emissions was due principally to a warmer winter, a cooler summer, less driving due to increased fuel costs, and use of more natural gas and renewables in the electric power sector.Look at the energy sector categories that we so seldom consider. Plenty of fresh targets for cutbacks. Coal mining...who'd have thought?
Look also at the land use/forestry related trends.
Via::Power Engineering, "EPA says CO2 emissions declined in 2006"