A shrinking carbon sink in the Arctic (IMAGE) University of Delaware Caption Melting ice in the Arctic Ocean is a bellwether for climate change, an apt illustration of environmental changes in a warming world. Credit Photo courtesy of Zhangxian Ouyang 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.