Contact: Caroline Perry
Caption: Given a two-dimensional image, the Kilobots follow simple rules to form the same shape. Visually, the effect is similar to a flock of birds wheeling across the sky. "At some level you no longer even see the individuals; you just see the collective as an entity to itself," says Radhika Nagpal.
Credit: Photo courtesy of Mike Rubenstein and Science/AAAS.
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