Vulcan Project emissions data (IMAGE) Northern Arizona University Caption Graphs generated by the Vulcan Project show total US fossil CO2 emissions in 2010 and monthly US fossil CO2 emissions. Credit Vulcan Project Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.