1. City, Wake-Up!: alarm clocks placed in locations of rape and assault, set to ring at the same time each day/night that the original crime took place; clock battery powered by foot-traffic; alarm only loud enough for people walking half a block away to hear
2. Public Pater Purifier: each day, chunks of ice break off the Polar Ice Caps, altering the salinity of the ocean water and its equilibrium. each day, a block of ice the size of the previous day's losses will be placed on top a sculpture. the sculpture then allows sunlight and surrounding environmental heat to melt the solid into liquid and dispensed into re-usable cups to provide drinking water for people walking on the street.
3. Human Robot: programmed to walk down each and every street and politely greet every person it meets