Susan L. Brantley (IMAGE) Penn State Caption Susan L. Brantley, Distinguished Professor of Geosciences and director of the Earth Environmental Systems Institute at Penn State Credit Penn State Usage Restrictions Non commercial use only 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.