Dear All,

I also was at the NASA Ames meeting. It was my first geoengineering meeting, and it was there that I was struck with the very enthusiastic endorsement of geoengineering as a solution to global warming by people who did not seem to be aware of the potential negative impacts. But Lane and Kheshgi were not among those who were blindly advocating geoengineering, as I remember it. I agree with Clive that the reason we are even considering this Plan B is that Exxon and other fossil fuel companies have had a dedicated campaign to deny anthropogenic global warming, and that AEI has been part of this campaign, and that if they were to now advocate mitigation we would not be nearly as interested in geoengineering. But it was not such a black and white discussion at the Ames meeting – it was more of a general discussion of geoengineering and a learning opportunity for many.

It was at the Ames meeting that I wrote down my 20 reasons why geoengineering may be a bad idea, as I listened to two days of presentations. (My research program since then has been to investigate those reasons. I have now crossed out three of them, but added nine new ones, so the total is now 26.)

Alan

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Alan Robock, Distinguished Professor
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