Obama science adviser John Holdren says that geo-engineering isn't on the table after all.
Rather than focusing on what Holdren doesn’t believe, let’s focus on what he does. I asked him a simple question. Does he stand by what he published 3 years ago, which I often quote:Also at Climate Progress: 'How climate change is causing a new age of extinction.'“The ‘geo-engineering’ approaches considered so far appear to be afflicted with some combination of high costs, low leverage, and a high likelihood of serious side effects.“He wrote back, “I said exactly that to Seth Borenstein.” In his earlier email, Holdren wrote bluntly:I said that the approaches that have been surfaced so far seem problematic in terms of both efficacy and side effects, but we have to look at the possibilities and understand them because if we get desperate enough it will be considered. I also made clear that this was my personal view, not Administration policy. Asked whether I had mentioned geo-engineering in any White House discussions, though, I said that I had. This is NOT the same thing as saying the White House is giving serious consideration to geo-engineering – which it isn’t — and I am disappointed that the headline and the text of the article suggest otherwise.