Making Venus habitable: Start by siphoning off the atmosphere.
Use self-replicating nano swarms that break apart the unwanted
bits off of the molecular chains and carry them out of the
atmosphere towards the sun. Mind you, this would require some
severely efficient energy storage - perhaps something akin to a
complicated electron maze... although at this point, we should
be FAR BEYOND electrons and being able to harness the energies
inbetween the "electron shells" and THEN harvesting the released
ions as well. Total science fiction, but then again, so is most
of theoretical physics :P*** -Kenneth Udut