Bruce Logan and Maha Mehanna, Penn State (IMAGE) Penn State Caption Penn State researchers, Bruce Logan, Kappe Professor of Environmental Engineering (right) and Maha Mehanna, postdoctoral fellow (left) are already at work on the next generation of microbial desalination cells based on using air cathodes. Credit David Jones, Penn State Usage Restrictions Non commercial use only 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.