Dutch designer Daan Roosegaarde has brought his huge smog vacuum cleaner to Beijing, and claims he can "make a whole city smog-free". More about Daan Roosegaarde launches campaign to make Beijing a smog-free city
Designer Daan Roosegaarde has installed the "largest smog vacuum cleaner in the world" in Rotterdam to help improve the city's air quality (+ movie). More about Daan Roosegaarde's Smog Free Tower opens in Rotterdam
Dutch designer Daan Roosegaarde has launched a Kickstarter campaign to fund what he describes as the largest air-purifier in the world (+ movie). More about Daan Roosegaarde aims to rid cities of pollution with Smog Free Tower