Cool, how much? IIRC, sustainability would require an individual average below 2 teqCO2/year.
> Besides, would money not be better spent curing cancer?
Look at what the world would look like if climate change is not prevented: https://bigthink.com/strange-maps/what-the-world-will-look-l.... Think of the consequences in famines (whole countries transformed into deserts), flooding, and the mass migrations and wars that would ensue. So no, cancer is not the priority, not when people will die by the hundreds of millions before reaching the age for getting cancer.
> I'm not sure that I believe the "impending doom" stuff about global warming.
Then you are in denial, and need to be exposed to more science. Again, sorry for being blunt.
> Humans are the most remarkably adaptable species on the planet; we will adapt to a hotter earth if need be.
Yeah sure, we can't individually give up on our beef sandwich, but we will have no problem adapting collectively to most of our current living spaces becoming uninhabitable.