World Ozone Day: 30 years of healing the ozone together!
This massive “hole” in the ozone layer triggered panic leading to the signing of the Vienna Convention and the Montreal Protocol.
Sep 16, 2015, 18:35 PM IST
This massive “hole” in the ozone layer triggered panic leading to the signing of the Vienna Convention and the Montreal Protocol.
Sep 16, 2015, 18:35 PM IST