Jonathan E. Snow, University of Houston (IMAGE) University of Houston Caption On a previous expedition to the North Pole in 2008, UH geologist Jonathan Snow (left) inspects a haul of rocks scooped up from the floor of the Arctic Ocean. Credit Heinz Feldmann, Max-Planck Insitut für Chemie 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.