The document discusses head transplantation surgery (HTS). It provides an introduction to HTS, outlines the history of attempts at the procedure in animals from 1908 onwards, and describes the proposed procedure for the first attempted human head transplant. This would involve removing the head and grafting it onto a donor body below 20 degrees Celsius, reattaching arteries and cooling the patient for 4 weeks of artificial coma and treatment. While controversial, the document argues HTS could help those with incurable conditions and may be theoretically feasible, though risky.