David Yang, Lehigh University (IMAGE) Lehigh University Caption David Yang, postdoctoral research associate in civil and environmental engineering, P.C. Rossin College of Engineering and Applied Science, Lehigh University Credit Courtesy of Lehigh University Usage Restrictions Contextual use with credit 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.