Brand: new, old and plan B

Stewart Brand (one of my heroes) has an interesting interview in the Guardian today and the money quote:

Environmentalists have been thinking about global warming for longer than most and so we've got used to the idea that mitigation, cutting back on greenhouse gases, is taking way longer than expected and, in fact, may not occur at all for decades. And therefore there needs to be a plan B. If you go to some kind of climate engineering you don't want to do it half-baked, you want to know what you're doing – and that requires research at scale, which hasn't occurred yet.