Serbia has introduced an innovative device called 'Liquid Tree' to combat air pollution.
It improves air quality by producing pure oxygen through photosynthesis using microalgae to reduce greenhouse gas emissions.
Its functioning is similar to that of trees and grass, but it is more efficient than trees because of the ability of microalgae to survive in polluted environments.
Liquid Tree aims to fill urban spaces where it is impossible to plant trees without replacing forests or existing plantations.
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