Air pollution is a major concern in cities around the world, particularly in areas with high population density who rely primarily on manufacturing for economic prosperity. Cities like Delhi, India, Baoding, China and Riyadh, Saudi Arabia struggle to lower smog and ensure that the air is breathable. The million dollar question is: "Is there a cost effective way of bringing down levels of air pollution that is actually effective?" Turns out there is, and the solution is much simpler than you would think. Watch the video below to learn more.