Peering into the ozone hole
"If you ask, 'How low is (the ozone hole) going to get?' Well, we don't know
either. Every year we just have to watch it and see what happens," McPeters
said.
"But in the long term, we have quite a bit of confidence in the models at this
point," he said. "In the long term, it has to get better."
http://science.nasa.gov/headlines/y2000/ast02oct_1.htm?list76937
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