Climate change is just one of many things we need saving from. Overcrowding, pollution, destruction of the wilderness, extinction of species, collapse of ecosystems, CO2 emissions... they're all just symptoms of the real problem, which is us. Humans, as a species, are the problem. Everything else is just symptoms.
Stop human population growth, and you'd stop all these other problems. Technical progress could reduce CO2 emissions *if* the globe's population was stable. Technical advancements could produce far more food than we'd ever need *if* the population was stable. Our energy needs could be met with clean sources *if* the population was stable.
Why do we think we have to keep growing the population?
We need to create these megaprojects to create jobs. We need to create economic incentives for employers to create jobs. We need to create more and more jobs because we have more and more people. Why do we have more and more people? We need to get more and more people because we need more people to buy more products to keep the other people employed. We need more people to pay taxes to pay for government services that are being stretched by having too many people. It seems like a giant Ponzi scheme, a hovercraft being held aloft by nothing more than its own hot air. That's the real cause of all these problems. If we don't keep adding more and more people, the hovercraft will crash.
We don't actually need more people. We need more consumer spending, and we need more government revenue. These could both be achieved without population growth, but they won't be. Adding more people to keep the Ponzi scheme going makes the people at the top happy because it doesn't cost them anything. But for the rest, adding more people is just going to put us on a path that leads us to "crab-bucket syndrome" or the "ghost ship of cannibal rats" scenario.
More consumer spending could be achieved without growing the population. People wouldn't have to spend so much of their money on rent or homes if they didn't have to compete with so many other people for a place to live. And adding more and more workers to the mix puts a downward pressure on wages.
As for more government revenue, we wouldn't need to keep growing government revenue if we didn't have to keep growing government programs and services to accommodate more and more people.
I think the key to stopping all of this is stopping population growth, not stopping capitalism. Now... does capitalism inherently require ongoing growth?
-k