Hey! This is too "cool"--in several senses of the word. If you haven't heard of "Urban Air Trees," check out this video.

September 15, 2008, 12:31 pm

Video report about the newly constructed "Urban Air Trees" in Madrid, Spain. These unique structures are designed to both affect the surrounding environment and act as a social centers. Using live plants and photovoltaic cells the Air Tree produces a substantial amount of oxygen and energy. Designed by Urban Ecosystems.