Dear Google, please solve death

Meet the transhumanists who believe that the brain can outlive the body.

"Dead of the world, unite!” Appearing in a manifesto published in Petrograd in 1920, this arresting slogan encapsulated the philosophy of cosmism, which promoted interplanetary exploration as a path to immortality. Mixing scientific futurism with ideas derived from the 19th-century Russian Orthodox mystic Nikolai Fedorov, cosmism was summed up by the rocket engineer Konstantin ­Tsiolkovsky (1857-1935) as “the perfection of man and the liquidation of all imperfect forms of life”. Liberated from the Earth, human beings would become pure ether, bodiless and undying. The belief that death could be conquered by science was embraced by a renegade section of the Bolshevik intelligentsia, including Maxim Gorky, and informed the decision to immortalise Lenin’s cadaver – first by refrigeration, in an early experiment in what would later be called “cryonic suspension”, and then by embalming when freezing failed. Cosmist thinking went on to find a home in the Soviet space programme and continues to influence Russian science to this day.

Nearly a century after the cosmist manifesto, a group of...