Permafrost Bison Bone (image) American Association for the Advancement of Science Share Print E-Mail Caption Alan Cooper is sampling permafrost bison bone, in Yukon Territory, Canada. Credit [Credit: Photo Julien Soubrier] Usage Restrictions Please cite the owner of the material when publishing. This material may be freely used by reporters as part of news coverage, with proper attribution. Non-reporters must contact Science for permission. Share Print E-Mail 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.