Evan Cooper

Evan "Ev" Cooper (1926–1983) from the United States was one of the first advocates of cryonics. In 1962, he privately published Immortality: Physically, Scientifically, Now, under the pseudonym Nathan Duhring, advocating what he called a "freezing program". In December 1963, he founded the Life Extension Society, the first cryonics organization in the world.

In 1962, shortly after Cooper's book was published, Robert Ettinger privately published his book The Prospect of Immortality that independently also suggested the idea of cryonics. While Ettinger's book received more publicity, the cryonics historian R. Michael Perry has written that "Evan Cooper deserves the principal credit for forming an organized cryonics movement".

For the last years of his life, Cooper was a sailor. He was lost at sea in 1983.