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Many people who worry about global warming hope that once emissions of heat-trapping gases decline, the problems they cause will quickly begin to abate. Now researchers are saying that such hope is ill-founded [6], at least with regard to carbon dioxide.

Because of the way carbon dioxide persists in the atmosphere and in the oceans, and the way the atmosphere and the oceans interact, patterns that are established at peak levels will produce problems like “inexorable sea level rise” and Dust-Bowl-like droughts for at least a thousand years, the researchers are reporting in the Proceedings of the National Academy of Sciences.

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