photo of researchers (IMAGE) Rice University Caption Wei Meng (from left), Bing Deng, James Tour and Satish Nagarajaiah have developed a process to remove toxic heavy metals from coal fly ash, making for greener, stronger cement. Credit Photo by Gustavo Raskosky/Rice University. Usage Restrictions Must credit Gustavo Raskosky/Rice University. 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.