India, Oct. 8 -- Vienna (dpa) - The Fountain of Youth appears in writings going back to the time of Herodotus, the 5th century BC Greek historian. And while a mythical spring and its time-reversing water has never been found, the wish to remain forever young - or at least delay the effects of ageing - lives on. Thanks to artificial intelligence, there is now at least a growing chance that we will be able to keep tabs not just on our age, but also on the mysterious process by which some people physically age faster than others. An Austrian-Chinese team of scientists has come up with a way they say can track the process by using AI as part of a blood test aimed at uncovering the molecular processes underlying ageing. The test is based on meas...