Scientists have used nanotechnology to produce the world's smallest radio. Little more than a resonant hair, the momofilament carbon tube turns radio energy into mechanical energy, which is then turned into an electronic signal -- acting much more like a taut string between two soupcans than a radio receiver. Well, but much cooler, and I've never actually gotten a taut string to work the way the Boy Scout Handbook says it should. These guys got their hair to play Layla, and that rocks. Bonus trivia: Largo from the opera Xerxes was the first music broadcast by radio.
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