ScienceIndiaIndia's 'liquid trees' could help cities breathe again06:07This browser does not support the video element.ScienceIndiaNandalal | Tabea Mergenthaler05/15/2026May 15, 2026Indian scientists are growing microscopic algae in giant water tanks — that outperform trees in cleaning city air. Plus, you can eat what comes out of them.Copy linkAdvertisement
