Originally uploaded to https://www.youtube.com/watch?v=hFo2syF9F08 by Tony Heller The City of Boulder, Colorado is currently powered by an incredibly clean natural gas power plant, which is for all inetnts and purposes pollution free. It is so unobtrusive that most residents aren't even aware of its existence. But the city council is concerned about emissions of CO2 (which is responsible for the spectacular green scenery) and wants to build hundreds of giant bird choppers to power the city on windy days.