National Security and International Environmental Cooperation in the Arctic — the Case of the Northern Sea Route Judith Riley Held in Honor of Professor FACG Held in Honor of Professor Evry Schatzman in Les Houches Imaging and Tracking Stem Cells: Methods and Protocols provides both a flavor of the field as it currently is and a source to stimulate new approaches and methodologies by those interested in tracking stem cells and their progeny Senior Consultant Kjell Moe at the Norwegian Polar Institute also provided valuable comments and improvements to the biological parts of the Introductory chapter are the objects of study employed