Scientists say an experimental tower in northern China, dubbed the world’s biggest air purifier, appears to be working. Researchers at the Institute of Earth Environment at the Chinese Academy of Sciences say they have seen improvements in the air quality over an area of more than three square miles in the past few months. The tower works through greenhouse coverings. Polluted air is sucked in, heated up by solar energy, and then circulated through multiple layers of cleaning filters. A number of locals say they have noticed a difference in the air quality, even during the winter when the city is especially prone to pollution. An experimental tower over 100 meters (328 feet) high in northern China — dubbed the world’s biggest air purifier by its operators – has brought a noticeable improvement in air quality, according to the scientist leading the project, as authorities seek ways to tackle the nation’s chronic smog problem. The tower has been built in Xian in Shaanxi province and is undergoing testing by researchers at the Institute of Earth Environment at the Chinese Academy of Sciences. The head of the research, Cao Junji, said improvements in air quality had been observed over an […]
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