Sears Tower generates its own electricity

While I learned some time back that Chicago's moniker as "The Windy City" refers to its hot-air-blowing politicians and not its actual, well, wind, it's still awesome to see the city's iconic tower making use of its iconic weather; and going green in the process.

Saying it's "taking sustainability to new heights" (groan), the Sears Tower will be installing fancy, minimalist wind turbines on its recessed rooftops. This is just a part of a five-year, $350 million project to renovate the building, with upgrades in the glass exterior, internal lighting, heating, cooling and elevator systems, and those turbines, which will provide power for the building's 4.5 million square feet of office and retail space.