Manipur, Sept. 16 -- The United Nations International Day for the Preservation of the Ozone Layer is celebrated every year on September 16. The theme for this year's celebration of World Ozone Day is"32 Years and Healing". This event commemorates the date of the signing of the Montreal Protocol on substances that deplete the ozone layer in 1987. This protocol has led to phase-out of 99% of ozone depleting substances in refrigerators, air-conditioners and many other products. The latest reports of Scientific Assessment of Ozone Depletion completed in 2018 indicates very favourable results as there is ozone layer recovery rate of 1-3% per decades since 2000. The UN report further highlighted that the ozone layer protection measures has actual...