Percival Zhang, Virginia Tech (IMAGE) Virginia Tech Caption Percival Zhang, an associate professor of biological systems engineering in the Virginia Tech College of Agriculture and Life Sciences and the College of Engineering, has developed an inexpensive, environmentally friendly way to extract hydrogen from plants, a development that could drive the hydrogen fuel cell market. Credit Virginia Tech Usage Restrictions Credit Virginia Tech 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.