Nature World: China has deployed drones to pollution-prone factories that could possibly be emitting tons of polluted air. The drones were sent out to spy on polluting industries across major cities. This step is taken because of the lung-choking smog that has posed a big danger to China.
The drones are used so that it can capture images that could not be censored while ground level investigation, as per GB Times. Drones will provide more precise images that will help in monitoring the pollution in these places....