Smog Free Tower

A Dutch design studio has developed and tested what they bill as the world's biggest outside air purifier. A prototype tested in Rotterdam acts as a giant vacuum cleaner sucking up air and removing the toxic particles. Next stop Beijing. Newsday's Tom Hagler spoke to the Dutch designer, Daan Roosegaarde.

(Picture: Smog Free Tower in Rotterdam, project created by Daan Roosegaarde. Credit: 'Roosegaarde').

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