Trees provide annual services worth USD 500 mn per magacity
Megacities are home to nearly 10 per cent of the world's 7.5 billion people.
Aug 24, 2017, 09:09 AM IST
Delhi: Contest seeks ideas from public for cleaner environment
The competition is focused on improving air and water quality in the capital by inviting innovative ideas from citizens, civic leaders, academics, corporations, and other institutions across India.
Dec 01, 2015, 19:45 PM IST