The Xian smog tower is undergoing testing by researchers at the Institute of Earth Environment at the Chinese Academy of Sciences. According to Cao, the tower was able to bring down the smog to moderate levels the day when air quality was severe. Launched in 2015, the Xian smog tower was announced to find a low-cost method to artificially remove pollutants from the atmosphere. The polluted air is sucked into the glasshouses of the tower and is then heated up by the solar energy. A full-sized tower would reach 500 metres (1,640 feet) high with a diameter of 200 metres (656 feet), according to a patent application the makers filed in 2014.

Source: Indian Express January 16, 2018 14:16 UTC