China Builds Experimental 33-Story Air Purification Tower That Turns Smog Into Clean Air

To say that the air quality in Chinese cities is bad is an understatement, as you can see below.

Statistics and image via Air Quality Index China

To tackle this, the municipal government of the city of Xian (population 8.7 million), the capital of Shaanxi province, has constructed what is essentially a massive air purifier. Standing some 33 stories (100 meters) tall, the tower is currently being tested by environmental scientists from the Chinese Academy of Sciences. Here's how it works,...

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