One of the most important insights that I’ve gotten in working with biologists and ecologists is that today it’s actually not really known on a scientific basis how well different conservation interventions will work. And it’s because we just don’t have a lot of data.
It’s interesting and scary to think about an Earth that could be completely controlled by humans, but it seems like it’s definitely possible. I could find fun thinking about living under the sea or all the places that humans really haven’t been able to sustain themselves in very well. Like, if we could really get control of that. I mean, it’s definitely a dark future, but I think something that I could embrace if we did go there.
Solar geoengineering rests on a simple idea that it is technically possible to make the Earth a little more reflective so that it absorbs a little less sunlight, which would partly counteract some of the risks that come from accumulating carbon dioxide in the atmosphere. When I say technically possible, it appears that at least doing this in a crude way is actually easy, in the sense that it could be done with commercial off-the-shelf technologies now, and it could be done at a cost that is really trivial, sort of a part in a thousand or a part in ten thousand of global GDP.
It’s the expectations themselves that start to change the material qualities of our world, the material qualities around science and technology, around our political activities. That it’s not just that the entrails have been read, but the fact that you now have to make a decision whether you’re going to [ward?] that warning or not.