Several companies announced new product lines slated for late 2009 production. These tiles will use clean air technology to fight pollution. Ceracasa Tile's 'BionicTile' cleans the air by converting nitrous oxide to inert nitrates. StonePeak's new photo catalytic titanium dioxide tile uses nanotechnology to clean the air.
They both sound like a fabulous idea. If they work, let's clad all our buildings in them!