It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
GENEVA (AP) — The seasonal "ozone hole" over the South Pole has disappeared again after reaching record size earlier this year, U.N. officials said Thursday.
The hole is a thinner-than-usual area in the protective layer of gas high up in the Earth's atmosphere. It has been forming in the extremely low temperatures that mark the end of Antarctic winter every year since the mid-1980s, largely due to chemical pollution.
The hole forms in August or September as Antarctica's long, dark winter is ending. It normally fills in by December.
This year, the hole peaked at 10.81 million square miles in mid-September — matching the record size set three years ago.