Earlier quoted context omitted.
> If we do not rally against it, our ability to live on this planet is at stake. I think you're speculating here, we don't actually know this. I believe the primary reason we haven't done anything yet is because the effects of increased CO2 levels haven't yet reached the scale of mass food production shortages, or a sudden increase the price of basic food stuffs. And since we can't know whether that will ever happen,…
Civilization's biggest challenge is addressing multi-generational problems. Modern America is one of the most depressing and backwards nations in that regard... we struggle with small engineering projects that simply span a couple decades, to say nothing of investing in and protecting future generations.
That was my takeaway from visiting Mesa Verde in 1972 and I haven't seen an example to contradict it yet.