Five of the "CityTree"-called moss filters have been installed in summer 2021. We look at how residents use the CityTrees.

Green City Solutions has developed the CityTree, the world‘s first biotech particulate filter for demonstrable improvements in air quality. The CityTree is based on the idea of combining plants with Internet of Things technology to create a natural yet intelligent air filter. Special moss cultures filter fine
dust and other harmful substan-ces from the air in the process. An innovative IoT technology concept generates both environmental performance and condition data in real time, which is displayed using
specially developed software. The CityTree is an innova-tive solution that can
provide clean air immediately and lead to a healthier life for people in highly
polluted urban environments.

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