technology review, john of dow jones as well. so i trust mit technology reviewment if i see "people" magazine or something, the secret of youth, i may not pick it up. if mit technology review is talking to me about well maybe there's a secret. i'm going to read it. >> there's a whole bunch of research going on in various different areas that kind of move us towards the point at which you could choose to maybe live longer. and there's sort of a very different areas. one is kind of new drugs. as you said, like a group of drugs. they can revert ageing in mice and geese so the idea is can we create a dapations of that. like treating ageing as a disease. >> because if you treat it as disease, then new funding opens up in a way that becomes a different idea in doctor's heads. >> exactly and there's a practical epe genetic. you can switch genes on and off which can rejuvenate tissue. all u of this stuff is very early, but it's getting to the point where we're going to have some serious questions to ask and life expectancy -- >> people ar