> Visit the Breathelife website and search for air pollution data from your city or Autonomous Community. Get into groups and think up a solution to improve the air quality of your environment. 2019 The BioSolar leaf that does the work of 100 trees Scientists at Imperial College, London , are collaborating with start-up Arborea on the BioSolar leaf — large panels covered with tiny plants that occupy the surface area of a single tree. The plants absorb carbon dioxide and release oxygen at a rate equivalent to 100 trees. The cultivation system also generates organic biomass from which Arborea extracts food additives for plant-based food products. Roofs that reduce smog In the United States, manufacturing conglomerate 3M has designed pollution-reducing granules to cover roof tiles. The product is activated by the Sun’s UV rays, generating elements that bind with the chemicals in polluted air and transform them into water -soluble ions that eventually wash away in the rain . Tests by the Lawrence Berkeley National Laborator y found that an average-sized roof coated in granules removes as much pollution from the air as three trees would . Airlite, the paint that purifies the air like a vertical garden One hundred square metres of wall is equal to the same area of forest. It destroys 88.8 % of atmospheric pollution , neutralises odours and removes virtually all bacteria . It also eliminates and prevents the growth of mould and fungi . It does not contain solvents, or petroleum products, which cause the emissions that pollute the air. It produces zero emissions and actively cleans up pollution . In Rome, the largest graf fiti mural in Europe is painted using Airlite. Tree walls in the middle of the city German start-up Green City Solutions’ mossy living walls, built over wooden benches, are the world’s first intelligent biotech air filter. The ability of certain moss cultures to filter pollutants from the air make them ideal natural air purifiers. The mosses are connected with fully automated water and nutrient provision based on unique Internet of Things technology. UN Environmental programme (Adapted) Four innovations to clean the air in our cities 11
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