Erich Osterberg, Dartmouth College (IMAGE) Dartmouth College Caption Dartmouth Assistant Professor Erich Osterberg and his colleagues' analysis of a 600-year-old ice core shows that present-day efforts to cut mercury emissions will reduce pollution more quickly than current models predict. Credit Dartmouth College Usage Restrictions Credit Dartmouth College 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.