National Geographic News, Reporting Your World Daily

Monday, November 23, 2009

Photo: Bright, White Future for "Green" LEDs, Scientist Says


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Holiday decorations at the Soldiers and Sailors Memorial Arch in New York City's Prospect Park in December 2006 made use of about 600,000 light-emitting diodes (LEDs). Recent advances in LED design and materials may soon allow the small, energy-efficient lights to revolutionize the ways people illuminate the world.

Photograph by Kathy Willens/AP Photo