A long time ago, visionaries such as M Vishveshwaraya, K Sheshadri Iyer, Jamsetji Nusserwanji Tata, and Mirza Ismail emphasised the importance of trees, parks and green recreational spaces beyond their visual contribution in a cityscape. But in our hurry to modernise through rapid economic growth, urban aesthetics and environmental upkeep and enhancement are being sidelined A city's green cover is its priceless asset. Mega cities around the world