Not many nonprofits have been around more than 100 years, especially ones dedicated to creating a more livable city. But the Municipal Art Society of New York (www.MAS.org) – or MAS NYC as it is now known - has defied the odds and continues to thrive in a fast-changing city. With a storied history of championing the first municipal zoning code in the United States and saving Times Square and Grand Central Terminal, today the organization leads a broad agenda promoting the city’s economic vitality, cultural vibrancy, environmental sustainability and social diversity. This week on “Knight Cities,” our guest is Vin Cipolla, president of MAS NYC. Email me via: Coletta (at) knightfoundation.org.