Efforts for environmental protection is bearing fruit. Now the ozone layer has rebounded, and scientists predict that by 2060-2075, the ozone layer will be back to its pre-1950s levels. Is this the reason, why Trump is unconcerned about it?
http://www.quickanddirtytips.com/education/science/why-is-the-ozone-hole-shrinking
http://www.quickanddirtytips.com/education/science/why-is-the-ozone-hole-shrinking
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