The recent situation of #Delhipollution got me thinking. Several experiments are getting tried out like the Chinese tower that seems promising. But the best-known technology is largely maintenance-free, #sustainable , and beautiful. Planting trees. Increasing the #green cover of our cities. I wish we built cities to be more green, which breathe. Nature can do it better than anything we can build. I hope to see new impetus to urban tree planting. …see more