William Sager, University of Houston (image) University of Houston Caption Will Sager (left of center, white polo shirt), lead author on the Nature Geoscience study confirming Tamu Massif as the world's largest volcano, waits to inspect a core sample drilled on IODP Expedition 324 (Shatsky Rise Formation) while IODP technicians prepare to cut it. Credit Image courtesy Integrated Ocean Drilling Program/U.S. Implementing Organization [IODP-USIO] Usage Restrictions None 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.