Crawling, nano-sized robots

Built from DNA, these teeny bots move as directed

By Stephen Ornes, 19:31 PM October 5, 2010

In 1966, scientists found a way to shrink anything — at least, they did in the movie Fantastic Voyage. In that film, a submarine and its crew were shrunk and injected into the body of a man. The man had been shot and was dying, and the tiny sub propelled around in his body in an attempt to save his life. The micro-crew did save his life, and the bad guy was eaten by a white blood cell. (Sorry for spoiling the ending.)

That movie was fiction — and far-fetched. A white blood cell will never...

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