This article from business week talks about a new kind of light bulb. It uses much less energy then a incandescent light bulb and uses a LED so no hum of the florescent or higher cost. Also is made of unbreakable glass and can have printed designs on it to change the way the light is projected on the ceiling.
http://images.businessweek.com/ss/08/07/0717_idea_winners/112.htm
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