The world's largest air purifier "smog filtering tower" (smog free tower) is pictured outside the Dalian International Conference Center in Dalian cit Stock Photo - Alamy
From smog diamonds to algae street-lights. This man is designing a cleaner, greener, brighter future | World Economic Forum
Xi'an Unveils Smog-Fighting Purifier Tower, but Does It Work? – Smart Air
A 23-Foot-Tall Air Filter Is Turning Rotterdam's Smog into Jewelry
Beware China's 'anti-smog tower' and other plans to pull pollution from the air
Delhi Unveils Smog-Fighting Purifier Tower, But Does It Work? – Smart Air
Smog-filtering tower developed by Chinese scientists in trial phase in Xi'an - People's Daily Online
This skyscraper-sized air purifier is the world's tallest
Smog-Sucking, Carbon-Crushing Air Purifier Opens in Beijing | Digital Trends
This tower sucks up smog and turns it into diamonds
This tower sucks up smog and turns it into diamonds
Daan roosegaarde: The man who turns smog into diamonds