KNOxOUT, the mural in Warsaw that absorbs as much pollution as 780 Trees

Who would have though that simply painting a mural on the side of a regular building would have the same pollution-cleaning effect as planting 780 trees? Organized by the sportswear company Converse as part of their City-Forests campaign, the latest mural in Warsaw, Poland, is not only an aesthetically pleasing artwork, but also an ingenious way to tackle a hot-topic as urban pollution. Painted using photocatalytic paint with titanium dioxide, on a building that faces the busy metro station Politechnika, the ingenious mural reportedly attracts airborne pollutants before converting them…

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