Titanium dioxide is in the air – Architects Daniel Schwaag and Allison Dring have figured out a way to ‘purify’ polluted air. The solution is called Prosolve-370 and is a series of  special tiles coated with titanium dioxide, which are placed on  homes and buildings. When exposed to UV light and humidity, the titanium neutralizes pollution.

http://updating-germany.de/projects/014-prosolve-370