Watch this video about the power grid on HowStuffWorks. The U.S. has nearly 500,000 miles of transmission lines, but most were built about half a century ago. Learn how the power grid works in this...
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Watch this video about the power grid on HowStuffWorks. The U.S. has nearly 500,000 miles of transmission lines, but most were built about half a century ago. Learn how the power grid works in this video from Medialink.
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