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The National Building Museum has been producing a video series called “Great Green Places” about various environmentally-friendly locales around DC.

First, there was Dupont. Then, U Street. Now, Columbia Heights. I see a northward trend. Why, you ask, is concrete-bound Columbia Heights so green? Because D.C. residents once drove their vehicles (boo greenhouse gas emissions) outside of the city for stores that are now Metro/walking/short car ride-accessible, according to city planner Harriet Tregoning.