Ray Kurzweil, American scientist and pioneering futurist, believes we are just a few years away from being able to extend our lives indefinitely.
In 2009 he wrote: “I and many other scientists now believe that in around 20 years we will have the means to reprogramme our bodies’ stone-age software so we can halt, then reverse, ageing. Then nanotechnology will let us live for ever.
“Within 25 years we will be able to do an Olympic sprint for 15 minutes without taking a breath, or go scuba-diving for four hours without oxygen.
“Nanotechnology will extend our mental capacities to such an extent we will be able to write books within minutes … If we want to go into virtual-reality mode, nanobots will shut down brain signals and take us wherever we want to go … So we can look forward to a world where humans become cyborgs, with artificial limbs and organs.”