How Many Presidents Does It Take to Change a Light Bulb?
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Light Bulbs,
Energy Efficiency,
Steven Chu Energy Secretary,
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Wh Lighting Standards,
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The new lighting standards will save enough energy annually to power all U.S. homes for almost a year, while saving consumers $1 billion to $4 billion a year in utility bills.
Trip Van Noppen | Posted 07.31.2009 | Green