The volume at hand presents the proceedings at the first scientific cryonics symposium in Germany with additional contributions by expert authors. The topics discussed encompass the scientific basis of cryonics, latest progresses in cryoconservation as well as problems and obstacles and biological foundations. Why do we age? Are there means to extend the life span? Can cryonic preservation be realistic? What are the ethical implications? Which influences does the movement of transhumanism have on cryonics? Different conceptions of cryopreservation are discussed, technical challenges and logistics of transportation on ice are addressed as well as proper education in applied cryonics. The example of the return of a frozen kidney to life is presented as well as the roots of cryonics in the ‘ice age’ of heart surgery and perspectives for cryobiology in emergency medicine after severe lesions.