Chicago: Green City, USA

Chicago is said to now be the greenest city in the USA. Despite having some of the worst sprawl during the past few decades, there are some really cool things going on there. One worker points out one of the really important reason for using green technology:

"It's not so much about saving the world," Sadhu Johnston, the 31-year-old environment commissioner for Chicago, said in an interview. "It's more about using green technology to save $4 million here, or earn $10 million there, and make the city better by doing that."