(via Laughing Squid) The Urban Air project seeks to convert outdoor advertising billboards into suspended bamboo gardens (video). Each Urban Air installation will feature live bamboo nourished by water misters. The installation will be monitored by a Wi-Fi enabled climate sensor. The project has its roots in a conceptual artwork created by Los Angeles-based artist Stephen Glassman back in 2010. Glassman is now working with environmental engineers, billboard fabricators, and other specialists to build the first full-scale prototype in Los Angeles. He also intends to develop a kit for installing Urban Air gardens in cities around the world.