UM-Bot Posted January 9, 2018 #1 Share Posted January 9, 2018 (IP: Staff) · There has been a distinct reduction in the level of ozone-destroying chemicals in the Earth's atmosphere. http://www.unexplained-mysteries.com/news/314730/hole-in-ozone-layer-is-healing-study-shows 4 Top Link to comment Share on other sites More sharing options...
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