Actually radioisotope-powered artificial pacemakers [1] has been used commercially for some two decades now, even if they aren't very popular. The technology o

Actually radioisotope-powered artificial pacemakers [1] has been used commercially for some two decades now, even if they aren't very popular. The technology of generating electricity from heat was somewhat different, but the technicalities of making small nuclear devices safe for Joe Average to just carry around in his chest are solved. Welcome to the future, please fasten your seatbelts :^) ---- [1] http://duckduckgo.com/?q=radioisotope+artificial+pacemaker&kl=wt-wt http://duckduckgo.com/?q=radioisotope+artificial+pacemaker&#...