Feature image:
![](http://new.usgbc.org/sites/default/files/rioplus20_0.jpg?1342562670)
On June 5, the Road to Rio+20 series made a final pit stop in Washington D.C., the North American host city for World Environment Day, to launch a new report, Advancing the Transformation to a Green Economy through Green Buildings and Resource Efficient Cities: Key Messages from North America. The series, a collaborative initiative between the U.S.