The <i>Nature</i> Cover (IMAGE) U.S. National Science Foundation Caption The Nature cover shows a selection of fossilized pollen from sediment cores collected from East Antarctica's continental shelf. These ancient remains were used by Sean Gulick, Amelia Shevenell and their colleagues to help date sediments eroded from the Aurora Subglacial Basin and document the evolution of the East Antarctic Ice Sheet over the past 55 million years. Credit Sophie Warny, Louisiana State University 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.