Reflections on a changing Washington, D.C. In History & Culture, Video / 21 July 2016 Peter Sefton, D.C. Preservation League trustee, reflects on how Washington, D.C. has changed in recent years. (Anacostia Community Museum video series) Related posts: Slimy invaders, giant snails: Q&A with mollusk expert Ellen Strong Parasitic flatworms flout global biodiversity patterns Hitchhiking snails fly from ocean to ocean NEON begins to monitor changing ecology of U.S. Tags: Anacostia Community Museum