Self-Assembling Magnetic NanoBots

Self-assembling magnetic microparticles mimic biological error correction

Richard Feynman was the first to suggest nanotechnology and tiny robots, while this line of research would make it easy to mass produce them, in almost any lab in the world. One fear with nanobots is they could reproduce without restraint, by eating anything made of metal, producing their own "Grey Goo" that eats all of modern civilization.

More likely, they will first create robotic ants, they can sell in the mail.