Original sentence: Efforts are underway by pedestrian advocacy groups to restore pedestrian access to new developments, especially to counteract newer developments where 20 to 30 percent do not include sidewalks
Edited sentence: But it wasn't that long ago that walking was the primary way of getting around in most cities.Efforts are underway by advocacy groups to restore pedestrian rights to new developments, especially to counteract newer developments where 20 to 30 percent do not even include sidewalks