living wall


This eco-installation that absorbs the pollution has been installed in Londons’s Piccadilly Circus in a bid to combat the city’s unsafe air quality levels.

Designed by German startup GreenCity Solutions, the CityTree is billed by the company as the world’s first intelligent biological air filter.

Each bench is equipped with a so-called “living wall”, which is filled with a variety of moss types that naturally absorb pollution. The whole design takes up a fraction of the space that would be needed to yield the same air-purifying results using 275 real trees.

“The ability of certain moss cultures to filter out and absorb air pollutants such as particulates and nitrogen dioxide makes them ideal air purifiers – but in towns and cities where air pollution presents the greatest challenge, mosses are barely able to survive, due to their need for constant water and shade,” said the firm.


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