Thomas Dietz (IMAGE) Michigan State University Caption Michigan State University researcher Thomas Dietz, who will help lead a two-year climate change study commissioned by the US Congress. Credit Kurt Stepnitz, Michigan State University 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.