Carrie M. Hall, Purdue University (IMAGE) U.S. National Science Foundation Caption NSF Graduate Research Fellow Carrie M. Hall and a team of researchers at Purdue University have developed more intelligent engine systems, which allow biodiesel to be used efficiently without causing pollution increases. Credit Carrie M. Hall, Purdue 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.