Dr. Jason Keller, Chapman University (IMAGE) Chapman University Caption Dr. Jason Keller of Chapman University stands in front of one of the chambers at the Department of Energy's SPRUCE project in northern Minnesota. Credit Chapman University 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.