Caribou (IMAGE) Penn State Caption Caribou in West Greenland, where they are struggling to locate nutritious food during calving season. Credit Eric Post, Penn State Usage Restrictions The credit line must be published along with the image. 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.