…Because this is what’s happening. With climate change, we’re looking at a situation where us environmentalists, instead of protecting natural systems from civilization, we’re now trying to protect civilization from a natural system, which is climate responding to our apparently excess greenhouse gases. And if they go ahead as we are today, then we won’t get a stable climate until maybe five degrees Celsius warmer, which is exactly what it was 55 million years ago, in the Eocene-Paleocene Thermal Maximum. There’s no rainforests in that world. There’s carrying(?) capacity for maybe 1.5 billion of us in that world, and it would be tough getting from the seven billion we have now to the 1.5 billion.
What we want is, somehow, to keep the civilization-friendly climate we’ve had for the last 10,000 years going for another 10,000 years. That would be nice. And then we’d get to keep having a civilization. So, in light of that, some different things are green than they used to be, back when the modern environmental movement took shape in the 1970s. Some of our ideas and methods from then don’t really apply now….
…We are now in an era called the Anthropocene, an era in which humans are running way too much of the atmosphere and everything else badly. We’re in this situation where we don’t have a choice of stopping terraforming. We only have a choice of terraforming well. That’s the green project for this century.