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October 25 2012

Antarctic Ozone Hole 2nd Smallest in 20 Years


The ozone hole above the Antarctic has hit its maximum extent for the year. Due to warm temperatures, the opening in the protective atmospheric layer was the second smallest it has been for 20 years, scientists said Wednesday (Oct. 24).

Stretching to 8.2 million square miles (21.2 million square kilometers), an area roughly the size of all of North America, the ozone hole reached its peak on Sept. 22. The largest one recorded to date spanned 11.5 million square miles (29.9 million square km) in 2000.

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