Yi-Chen Ethan Yang (IMAGE) Lehigh University Caption Y.C. Ethan Yang, associate professor, civil and environmental engineering, P.C. Rossin College of Engineering and Applied Science, Lehigh University Credit Lehigh University Usage Restrictions Contextual, credited use only License Original 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.