A Polar Bear Waiting for Ice to Form (IMAGE) U.S. National Science Foundation Caption A female polar bear walks along the shore of Canada's Hudson Bay, waiting for ice to form. Credit Steven Amstrup, Polar Bears International 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.