Air pollution is a major climate problem in the world. It causes over 3 million deaths every year. People seem to be uninterested in that, sure about the fact that governments will reach a solution, but they don’t know they are the solution yet. By washing clothes with a photocatalytic water solution, people can absorb every day the same amount of nitric oxide produced by a car. WWF will organize a marathon with the aim of spreading the message and turning each person into a human filter.