Greenland Ice Core (IMAGE) University of Washington Caption This ice core from Summit, Greenland, kept in the laboratory of Jihong Cole-Dai at South Dakota State University, provided data that Lei Geng used in his research. Credit Jihong Cole-Dai Usage Restrictions News use only 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.