Photo2 (IMAGE) Desert Research Institute Caption A pine pollen grain (Pinus sp.) collected from the ice core and examined under the microscope. Photo credit: Jessi LeMay/DRI. Credit Jessi LeMay/DRI Usage Restrictions For use with credit License Original 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.