There used to be only three ways off of a kidney transplant waiting list. The first was to find a healthy person from within one’s own pool of friends and family, who perfectly matched both the recipient’s blood and tissue types, and possessed a spare kidney he or she was willing to part with.
A ROBOT ARMY. If you believe futurist Ray Kurzweil, by 2030 we’ll all have armies of microscopic robots flowing through our bodies, diagnosing diseases and delivering drug treatments where needed. One big problem? We don’t have a good way to get drug-delivering bots where they need to go.