National planning expert Jeff Speck has spent his career studying what makes cities thrive and has boiled it down to one key factor: walkability. From economists, epidemiologists, and environmentalists to preservationists, planners, and parents, all agree that walkable communities are better in just about every way. Speck explains why walking is useful, particularly regarding land-use, zoning, transit, and parking, and then focuses on how, by sharing examples of places where walking is safe, comfortable, and interesting.