More news on Chicago's green front: today the city will break ground for the first certified "green" elementary school, an eco-friendly structure featuring drought-resistant plants on the roof, solar panels, harvested rainwater and flooring made of recycled glass. The new Tarkington Elementary School, in the Marquette Park neighborhood, is one of four schools built following a philosophy of using resources efficiently, making the least impact on the environment and making the health and productivity of the occupants a priority.