SFC's Entrepreneur of The Day Goes To...

Can hot air be the free fuel of the future? - CNN.com: "He wants to create, capture and control hot air to help power cities. He plans to build a huge solar updraft tower, 2,600 feet tall, in the Arizona desert. As the hot air moves into the tower, it would turn 32 turbines, spinning them fast enough to create mechanical energy, which generators convert to electricity."

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