Yingcai Zheng (IMAGE) University of Houston Caption Yingcai Zheng is Robert and Margaret Sheriff Professor in Applied Geophysics at the University of Houston. Credit University of Houston 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.