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South Pole's ozone hole shrinks to smallest since discovery

BY SETH BORENSTEIN, AP Science Writer WASHINGTON (AP) — The ozone hole near the south pole this year is the smallest since it was discovered, but it is more due to freakish Antarctic weather than efforts to cut down on pollution, NASA reported . This fall, the average hole in Earth's protective ozone layer is 3.6 million square miles (9.3 million square kilometers). That's down from a peak of 10.3

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