Meanwhile, Sweden is soaking up body heat from public places to help heat buildings, China unveiled plans for a futuristic eco city, and several offices in Minnesota flipped on a set of souped-up ceiling lights capable of broadcasting wireless internet.

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In this instance, these bands have been reserved for digital terrestrial TV broadcasting and wireless microphones.

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CNN.com turned to Bob Schukai, the vice president of wireless and broadband technologies for Turner Broadcasting System -- of which CNN is a division -- for some advice.

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