Environmental Health Scientist (IMAGE) University of Massachusetts Amherst Caption Richard Peltier is an associate professor in the UMass Amherst School of Public Health and Health Sciences. Credit UMass Amherst 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.