Glacier-Fed Stream (IMAGE) University of Wyoming Caption UW research scientist Lusha Tronstad takes notes while conducting research downstream of Petersen Glacier in Grand Teton National Park. Credit Scott Hotaling 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.