I think it's more than possible, i think it's virtually inevitable. If you're familiar with the works of Ray Kurzweil he talk, in great detail, about some of the things you mentioned in your post. Through the use of Nanobots his belief is that eventualy technological intelligence will surpass that of man (the singularity he calls it) as this point the likelihood is that we will be able to do all sorts of things with nano tech at the core. potentially even restoring people to life with tiny strands of DNA, accentuating brains with nanobots. Curing diseases and even ageing and who knows what else. His work is really worth reading and his predictions have had a scary habit of coming true in the past. Great article by the way.