Came across this on at Discovery Urbanism who came across it from Good Magazine. It basically takes the population of America (just over 300 million) and has everyone living in a neighborhood the density of Brooklyn, NY (think brownstones and four story walk-ups, condos, coffee shops, pocket parks, heavan). This national neighborhood would then be able to fit within the entire state of New Hampshire! Could you imagine the remaining 49 states being left for open space (in theory...we need places for farms and industry). Granted with only about a 17 miles of sea cost things may be a little crowded come summer, but the concept definitely gives new meaning to Mr. Rogers "Who Are the People in Your Neighborhood" song.
