Covering a surface area of 3.5m2, this highly technological "forest" called CityTree has the same air-purifying power of 275 conventional trees. It consist of 1.682 individual plants and it may be the answer to the lack of space in our ever-growing urban areas.
Using moss cultures that have large surface leaf areas, the installation captures and filters toxic pollutants from the air. Fully equipped with solar panels, rainwater storage and a Wi-Fi enabled sensor, the smart "forest" can also monitor soil humidity, temperature, water and air quality. The moss installation has been popping up in cities around the world, including Oslo, Paris, Brussels and Hong Kong.
In 2014, the World Health Organization reported that air pollution exposure causes one in eight of total global deaths, which is about seven million people. This is problematic especially in urban areas, where planting new trees is not always a viable option - so why not install them instead?