Caldeira on Climate Science and Choices





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Published on Aug 24, 2012

Ken Caldeira, a climate scientist with the Carnegie Institution and Stanford University, discusses his recent article in Scientific American on "The Great Climate Experiment."
(Part 1; Part 2 is here: http://youtu.be/YMojTFhLSy4 )

He concludes that humanity's carbon habit is heading the planet toward a Cretaceous climate without big changes in energy norms, and he proposes a fresh way to engage people on the need for a modest investment to sustain a livable climate.

His lab: http://dge.stanford.edu/labs/caldeira...
Caldeira on Dot Earth: http://j.mp/dotcaldeira

His article is behind a subscription wall here:

The main points:

The carbon dioxide emitted today will affect the planet for hundreds of thousands of years.

If humanity continues to spew greenhouse gases into the air at the current rate, we will re-create the hot, wet conditions of the Cretaceous era, some 100 million years ago.

At present, humanity is altering the climate 5,000 times faster than the pace of the most rapid natural warming episode in our planet's past.


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