Posts tagged: List of tallest buildings and structures in the world

America’s Tallest Skyscraper Becoming a Solar Farm

America’s Tallest Skyscraper Becoming a Solar Farm – Green … Chicago‘s Willis Tower, America’s tallest building — formerly known as the Sears Tower, is getting a major green makeover. The south side of the 56th floor. http://www.greentechnologyenergy.com/americas-tallest-skyscraper-becoming-a-solar-farm Tweet