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Nature 445, 580-581 (8 February 2007) | doi:10.1038/445580a

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Climate change 2007: What we don't know about climate change

Quirin Schiermeier

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Uncertainty remains over feedback effects.

This article is part of Nature's Climate Change 2007 special.The 4th Assessment Report from the Intergovernmental Panel on Climate Change (IPCC) has a finely calibrated lexicon of certainty.