
American architect Thom Mayne is building a wind-powered skyscraper in Paris, France. Standing at 984 feet, the building will be nearly as tall as the Eiffel Tower.
Wind turbines will power the building's HVAC systems for part of the year. A retractable outer layer will reduce the heat from sunlight through the windows in summer.
The building, set for completion in 2012, will cost close to $1 billion.


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