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Speaking at Cree, Inc. in Durham Thursday, Vice President Joe Biden advocates for the widespread adoption of energy-efficient LEDs. Secretary of Energy Steven Chu accompanied Biden on the visit.

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By Larsa AlOmaishi

April 2, 2013 | 8:43pm EDT

Speaking at Cree, Inc. in Durham Thursday, Vice President Joe Biden advocates for the widespread adoption of energy-efficient LEDs. Secretary of Energy Steven Chu accompanied Biden on the visit.