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Nature 408, 651-652 (7 December 2000) | doi:10.1038/35047188

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What drives climate?

Lee R. Kump

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Variation in the amount of CO2 in the atmosphere is usually taken to be the main cause of climate change on geological timescales. The apparent exceptions to the link threaten to undermine that view.

In a worst-case scenario, fossil-fuel burning will pump up concentrations of CO2 in the atmosphere to levels higher than those of the past several tens of millions of years1, 2. Hence the intense research on the long-term behaviour of the carbon cycle.