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Here's another article on LEDs , with the claim that Gallium Nitride (GaN) made on silicone instead of sapphire could lead to a breakthrough in cost. Low–cost LEDs May Slash Household Electric Bills Within Five Years ScienceDaily (Jan. 30, 2009) — A new way of making LEDs could see household...

Might CFL lightbulbs be a thing of the past in the not-too-near future? Article here . On the Brink of an LED Revolution - Report SustainableBusiness.com News A "revolution" in the way we illuminate our world is imminent, according to a paper published this week by two professors at Rensselaer...