bits: Making pictures with DNA for fun and... well, fun (for now)

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Driving across campus this evening I heard a story on NPR, Fun with DNA...

Imagine a yellow smiley face. Now imagine 50 billion smiley faces floating in a single drop of water. That's what scientists have made using a new technique for building super-tiny shapes using the familiar double helix of DNA.

(from NPR's All Things Considered)