John W. Pepper (IMAGE) University of Arizona Caption John W. Pepper, assistant professor of ecology and evolutionary biology at The University of Arizona. Credit Courtesy of the University of Arizona Usage Restrictions This photo may be used only in conjunction with a story about the research described in this release. 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.