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Scientists are accustomed to gradual change.

But for a large part of Wally Broecker's career — based on paleoclimate evidence — he was obsessed with the idea of abrupt climate change that arrives suddenly and dramatically.

Looks like Wally was right.

https://doi.org/10.1038/328123a0
NATURE VOL. 328 9 JULY 1987 COMMENTARY Unpleasant surprises in the greenhouse? Wallace S. Broecker There is now clear evidence that changes in the Earth’s climate may be sudden rather than gradual. It is time to put research into the build-up of carbon dioxide in the atmosphere on a better footing.

Unpleasant surprises in the greenhouse? - Nature

There is now clear evidence that changes in the Earth's climate may be sudden rather than gradual. It is time to put research into the build-up of carbon dioxide in the atmosphere on a better footing.
Nature
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