One of the highlights of this Post article about the District’s efforts to be more green is the news that the Reeves Center at 14th and U Streets NW has covered its roof with trays filled with plants that filter air and absorb rainwater.

One Judiciary Square has also received a new “greenroof” installed by DC Greenworks, an interesting local non-profit that provides full-service greenroof design, installation, and consulting. These roofs help to insulate buildings, protect roofs from UV rays and most importantly here in D.C., slow down the flow of storm water into area rivers. Sewage water draining into the Potomac and Anacostia is the main source of pollution in our rivers.

Image from the D.C. Office Of Property Management