Immortality predicted

According to the American inventor and futurist Ray Kurzweil believe that in around 20 years we will have the means to reprogramme our bodies' stone-age software so we can halt, and then reverse, ageing.

"Ultimately, nanobots will replace blood cells and do their work thousands of times more effectively. 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. Heart-attack victims – who haven't taken advantage of widely available bionic hearts – will calmly drive to the doctors for a minor operation as their blood bots keep them alive."

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