Antarctic Ozone Hole Is Smallest in Five Years, Scientists Say
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The ozone hole over Antarctica, a doorway for harmful solar radiation in the Southern Hemisphere, has shrunk to the smallest in five years, according to a New Zealand government-owned researcher.
The hole decreased in size to about 22 million square kilometers (8.5 million square miles) from 24 million square kilometers last year, Auckland-based National Institute of Water and Atmospheric Research said in an e-mailed statement today.