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China built the ‘world’s biggest air purifier’ (and it's working) | EMCEE
There’s 100-metre high air purification tower in Xian in Shaanxi province that after a few months of operation is said to be working. The purifier is dubbed “the world’s biggest.” Testing of the tower is being done by researchers at the Institute of Earth Environment at the Chinese Academy of Sciences. Cao Junji, head of …