Photo by liberated by madness.

According to this here PDF, the District of Columbia — even with a pristine environmental governance score and high marks for its environmentally-friendly buildings and land use policies — ranks only eighth in the Green Cities Index, a study of 27 U.S. and Canadian cities’ sustainability efforts conducted by the Siemens Corporation. So what gives? Despite the study’s endorsement of Washington’s disposable bag tax and Capital Bikeshare, low marks for the city’s water supply, and “a middling recycling rate” of 17.6 percent cost us in the overall rankings.

Come on, people, get to separating!