October 15, 2010
Empire State Building, New York
Photograph by Joe McNally, National Geographic
This Month in Photo of the Day: National Geographic Magazine Features
In the city that never sleeps a new awareness about energy means the Empire State Building now uses bright lights at night only to celebrate holidays and special events. And power-hungry Manhattan has generating potential of its own: A tidal-energy project under development in the swift-flowing East River could power a thousand homes.
See more photos of the July 2010 story "The 21st Century Grid."
See photos of New York »
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