Pollution is a key problem when you think about the environment but if this study and solution from Boral Roofing is true then pollution or smog may become the next issue that can be turned into something useful for people.
This is with regards to the Smog Eating Tiles. The tiles are coated with titanium dioxide, something that reportedly breaks down nitrogen oxide in the air and turns them into calcium nitrate. The harmless compound washes of the roof and can eventually turn into useful garden fertilizer for your plants.
The whole process should be another welcome addition to eco-friendly concerns, something that can transform the controversial occurrence of smog or pollution and use them as something which can make plants healthier with the new kind of fertilization process.