Pamela Green, University of Delaware (IMAGE) University of Delaware Caption Pamela Green, Crawford H. Greenewalt Chair and professor of plant and soil sciences and marine bioscience, at the University of Delaware. Credit University of Delaware/Kathy F. Atkinson Usage Restrictions Credit must be included to University of Delaware 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.