The District of Columbia is determined to be the most sustainable city in the U.S. and green roofs are part of the plan. Find out how Washingtonians are transforming their rooftops from unattractive, harmful spaces into beautiful, environmentally friendly places. These elevated green spaces range from small, residential roof-top gardens to vast spaces on commercial and government buildings. In D.C., you’ll even find green roofs atop a traffic tunnel and a reservoir.
Directed by Sandy Cannon-Brown. Produced by Peter Ensign.