This article from The Philippine STAR - World Features newspaper, dated September 18, 2010, Saturday, from page A-23, caught my attention. The article entitled, UN scientists: Ozone layer depletion has stopped, discusses that due to the phasing out of chlorofluorocarbons (CFC) used in refrigerants, foams and aerosols since the Montreal Protocol of 1987 and involving 196 countries, the ozone layer should be restored by mid-century according to UN scientists.If this news is true then it is a major accomplishment for mankind. Though half a century or 50 years estimated for ozone recovery is still a very long time, I wonder what other steps should be done in order to fast track ozone build-up?
