Opinion: How walkable cities can change the world

Before zoning regulations came into existence in the 20th century, many cities around the world were complicated, integrated organisms.  The ability to stroll through cities became less of a focus for urban planners during the last century, when needs of the car typically came first. In recent years this has fuelled the trend of people making their retail purchases online rather than at their local store. While cities often still reflect that preference for machine over foot, there are move