The presence of nearby coal power plants severely affects Belgrade's air quality, but liquid trees may offer a solution. A device with microalgae which binds to carbon dioxide and produce pure oxygen through photosynthesis. ???? nanaibrahim2023 Liquid Tree: https://worldbiomarketinsights.com/a-liquid-tree-scientists-in-serbia-make-incredible-innovation/ Source of video: https://www.instagram.com/reel/CpN-pX2LSqI/?igshid=YmMyMTA2M2Y%3D