Empire State Building goes green, one window at a time

The Wall Street Journal
August 17, 2010

How does a Depression-era skyscraper go green? For the Empire State Building, which is in the middle of $550 million renovation that includes about $100 million in energy-efficient upgrades, all 6,514 windows must be replaced. And that’s no easy task, according to an Aug. 16 article in The Wall Street Journal.

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