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Panels of microalgae could be installed on roofs to clean the air

This article originally featured in The Skylark’s newsletter and was written as a condensed news in brief.

British start-up, Arborea have developed a system that cultivates photosynthetic organisms – including microalgae, diatoms and phytoplankton – on giant trays, which can be arranged in a similar fashion to solar panels. The organisms use sunlight, water and CO2 to live and grow, cleaning the air and producing oxygen as a byproduct.

The trays could be attached to the tops of buildings, making them particularly effective in major cities. Taking up the same space as a single tree, the trays would absorb the equivalent CO2 of 100 trees. Arborea has partnered with Imperial College London to test its “BioSolar Leaf” system outdoors.

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