[PythonicAlpha]

Still, I think, CO2 reduction would be the less costly variant, that we could do today. It might not be enough, though. But at least we should make a start. But with the current political climate, we might stop, when it is already to late. Humanity is working on its own doom steadily.

Newest reports say, that the CO2 values rose most drastically in the latest years.

And no, Mars is no substitute for Earth.