Dr. Robert J. Brulle, Drexel University (IMAGE) Drexel University Caption Dr. Robert J. Brulle is a professor of sociology and environmental science at Drexel University in Philadelphia. Credit CASBS 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.