Field said experts paint a dramatic contrast of possible futures, but because countries can lessen some of the harms through reduced fossil fuel emissions and systems to cope with other changes, he said he doesn't find working on the report depressing.
"The reason I'm not depressed is because I see the difference between a world in which we don't do anything and a world in which we try hard to get our arms around the problem," he said.
The Intergovernmental Panel on Climate Change: http://www.ipcc.ch/
Seth Borenstein be followed at http://twitter.com/borenbears
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