// Dr. Farrukh A. Chishtie As Lahore continues to rank among the most polluted cities in the world, a new spectacle has captured public and media attention: the deployment of so-called "anti-smog guns." Mounted on trucks and resembling high-pressure water cannons, these machines spray a fine mist of water into the air in the hope of "washing away" harmful particulate matter. While the effort may seem commendable at first glance, environmental scientists and urban planning exp