Joel Davis, Purdue University (IMAGE) Purdue University Caption Purdue graduate student Joel Davis stands with equipment used to identify a new structure water molecules assume when interacting with oil. Credit Purdue University photo/Mark Simons 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.