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Green City Solutions It kills 7 million people a year and causes diseases including lung cancer and pneumonia. Peter Sänger, a horticulturist turned entrepreneur, founded Green City Solutions to develop solutions to the problem that combine technology and sustainability. This article is part of Changemakers Playbook, a series that looks at innovation across different industries. What if a city bench could provide a place not just to sit but also to breathe a little easier? That s the idea behind CityTree, a 14-foot-high moss-covered, energy-efficient bench and air purifier that is popping up in cities throughout Europe and Asia. The ingenious piece of urban furniture uses the natural ability of living moss to bind with fine particles and remove them from the air up to 82% of them and Internet of Things (IoT) technology to measure and adjust its performance in real time.

United statesFrance generalHong kongCity ofUnited kingdomNoord hollandLiang wuDresden universityGreen city solutionsWorld health organizationChangemaker playbookGreen cityWorld healthNorth americanGreen city solutionTb2020 changemakers playbook