Cottongrass in Greenland (IMAGE) University of California - Davis Caption Cottongrass blow in the Greenland wind. Spring is advancing earlier in the polar regions and other high latitudes than it does at lower latitudes, according to a UC Davis study. Credit Eric Post/UC Davis Usage Restrictions Provide credit 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.