The hole in the ozone layer over Antarctica may close within 50 years as the level of destructive ozone-depleting CFCs in the atmosphere is declining, a leading atmospheric scientist said. Paul
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/ozone-hole-shrinking-says-un-report
[2] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ozone-layer