One of the biggest problems cities currently face is air pollution. According to data provided by the WHO, 9 out of every 10 people in the world breathe polluted air, causing the premature death of more than 7 million people. Furthermore, 9 of Latin America’s 10 most polluted cities are in Chile. Photio, a technology developed by Fractal SpA, seeks to contribute to the solution of this complex problem by turning surfaces -such as walls of houses and buildings- into environmental decontaminants. Photio technology is a nanotechnological additive for paints (in liquid form) that aids in the degradation of several environmental pollutants through a photochemical process triggered by natural or artificial UV radiation.