The largest Arctic ozone hole ever recorded is now closed - CBS News
- The largest Arctic ozone hole ever recorded is now closed CBS News
- North Pole's Largest Ozone Hole Closes Thanks to a Strong Polar Vortex PEOPLE
- The largest-ever Arctic ozone hole developed this spring. Now, scientists say it's closed. CNN
- The largest Arctic ozone hole in history is now closed New York Daily News
- The largest ozone layer hole over Arctic has CLOSED in huge boost to environment Express.co.uk
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