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LED
Business & Technology
This gravity-powered lamp could bring nearly free lighting to the developing world
Critical List: Antarctic ice sheets’ soft underbellies; monkey sets traps
Living
Best light bulb ever will cost you $50
Business & Technology
Times Square ball-drop switches to LEDs
Living
Top five New Year’s resolutions for planet and profit
Business & Technology
Google's open-source, wireless, smartphone-controlled lightbulb
Climate & Energy
Critical List: Al Gore praises Romney; a fifth Brazilian anti-logging activist dies
Business & Technology
Daylight-mimicking LEDs save power, might reduce symptoms of Alzheimer’s
Business & Technology
BP report makes you wonder: This is 'safety first'?
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