NANOTECHNOLOGY UPDATE: “Georgia Tech models swimming, cargo-carrying nanobots. “The nanobot war is escalating. Not content to let Penn State’s nanospiders win the day, Georgia Tech has answered back with a noticeably less creepy blood-swimming robot model of its own, whose look is more that of a fish than any arachnid this time around. It still uses material changes to exert movement — here exposing hydrogels to electricity, heat, light or magnetism — but Georgia Tech’s method steers the 10-micron trooper to its destination through far more innocuous-sounding flaps.”