Wild Reindeer, Hardangervidda, Norway (IMAGE) U.S. Geological Survey Caption Wild reindeer, Hardangervidda, Norway. Credit Olav Strand Usage Restrictions I hereby grant AAAS irrevocable permission to use the multimedia material(s) submitted here, to promote articles published by Science, and for any later use by AAAS or by the EurekAlert! Web site, world-wide, in any format or medium now known or hereafter developed, and to re- distribute the material to the news media and others. Important: The person submitting this material warrants that s/he owns the material, and that use thereof does not violate the copyright or other personal or proprietary right of any person. The person uploading this material also warrants that any human subjects appearing in this material have authorized him or her to provide the material to AAAS for promotional use. 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.