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It looks like we can go back to Incandencent Light Bulbs again.

 
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I just saw this story that MIT has found a way to make the Incandescent Light Bulb three times more efficient than LEDs. Ha!

http://www.telegraph.co.uk/science/2016/03/12/return-of-incandescent-light-bulbs-as-mit-makes-them-more-effici/
 
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