OZONE LAYER
1998
The ozone hole over Antarctica grows to 25 million square kilometers. (The previous record, set in 1993, was 3 million square kilometers.)
Source
The Montreal Protocol
Links
U.S. National Aeronautics and Space Administration (NASA): Ozone Hole Images
Cambridge University's Centre for Atmospheric Science: The Ozone Hole Tour
United Nations Environment Programme: Ozone Secretariat
OzonAction Programme
Worldwatch Links
Sharing the Air," Chapter 6, Vanishing Borders
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