Dutch designer Daan Roosegaarde has unveiled his Smog Free Tower, a seven-meter (23 feet) tall structure that purifies 30,000 cubic meters of air per hour.
원문출처 : http://www.cnn.com/2016/09/29/design/smog-eating-tower/index.html
원문출처 : http://www.cnn.com/2016/09/29/design/smog-eating-tower/index.html