Emissions from fossil fuel combustion account for a majority of anthropogenic CO2 emissions. In 2008, global emissions of CO2 from energy use totaled 30 gigatons.
Center for Sustainable Systems School of Natural Resources and Environment University of Michigan 3012 Dana Building 440 Church Street Ann Arbor, MI 48109-1041 Phone: (734) 764-1412 css.info@umich.edu