Correspondent Lee Patrick Sullivan visits the Lightfair International trade show in Philadelphia to find the latest offerings in energy efficient bulbs. He finds a 60-watt equivalent LED bulb that will be the first in the world to sell for less than $20 and the first 100-watt equivalent LED bulb to hit the market in October. He also find out how LED technology is expanding to bring us bulbs that can be dimmed and programmed with a tablet computer or smart phone and wireless sound throughout the home.
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