The banning of ozone-depleting chemicals hasn't yet caused detectable improvements in the Antarctic ozone hole.
via Discovery News http://news.discovery.com/earth/weather-extreme-events/ozone-hole-wont-heal-until-2070-131212.htm#mkcpgn=rssnws1
via Discovery News http://news.discovery.com/earth/weather-extreme-events/ozone-hole-wont-heal-until-2070-131212.htm#mkcpgn=rssnws1
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