Appalachian Stream, Mud River Watershed (IMAGE) Duke University Caption Duke University researchers have found high levels of selenium in aquatic insects and the spiders that feed on them downstream from a major coal mining site in southern West Virginia. Credit Photo by Jacqueline Gerson, Duke University 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.