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BoralPure Smog-Eating Tile

 Using some creative chemistry, Boral Roofing has turned a standard building material into a formidable weapon—not just against sun and rain, but also air pollution. The tile's coating contains TiO2 (titanium dioxide), which reacts with and neutralizes NOX (nitrogen oxide) particles in smog. The byproduct is a harmless precipitate that accumulates on the roof and washes away in the rain. That's pollution removal at its best. No machinery. No moving parts. No energy input other than sunlight. Just a clever, air-cleansing chemical reaction. (Price: approximately $650 more than a standard 2500-sq.-ft. tile roof)