The Guardian is running a short interview with Nick Bostrom, author of The Fable of the Dragon-Tyrant, amongst other works: "Now the discussions tend to start from the position that, yes, it will be increasingly possible to modify human capacities. ... For healthy adult people, the really big thing we can foresee are ways of intervening in the ageing process, either by slowing or reversing it. ... what you would need to do is either slow the rate at which this damage accumulates, or, even better, go in after the damage has accumulated and remove it. Stem cells, for instance, can be used to regrow cells that we have lost. And we might develop new enzymes which could break down those substances that the body, unaided, cannot deal with."