Choi-Sayeed (IMAGE) University of Houston Caption Yunsoo Choi, left, associate professor in the Department of Earth and Atmospheric Sciences at the University of Houston, and Ph.D. student Alqamah Sayeed developed a new model to better predict ozone levels. 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.