Pittsburgh skyscraper to be greenest in the world

PNC Financial Services Group, Inc. recently announced that it plans to construct the world's most environmentally friendly skyscraper. Once complete in 2015, the Tower at PNC Plaza in Pittsburgh will serve as PNC's executive offices, according to a June 7 Reuters report.

The approximately 800,000-square-foot Tower at PNC Plaza will feature a double glass facade to enhance energy efficiency by reducing cooling costs and allowing natural airflow to the building, according to the article.

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