The Greenbuild Expo started this morning at McCormick Place with a keynote by none other than Al Gore's president, Bill Clinton. Greenbuild 2007 brings 18,000 building professionals together for education sessions, lectures, tours of Chicago's greenest buildings, and a huge number of booths featuring new products and technology. Greenbuild says they chose Chicago because of the city's legacy of great architecture and Mayor Daley's dedication to all things green. (During his reign, the city has... more ›