In addition to cardiac death, brain death has also been considered the end of life since 1968. However, scientists are increasingly expressing doubts. Transplantation medicine needs a death criterion, because vital organs can only be removed from the dead. But are organ donors really dead? Since the first successful heart transplant in 1967, organ donation has been part of everyday clinical practice in many countries. However, acceptance seems to be declining in some countries: In Germany, the ...