[layer8]

CO2 is actually not so nice for breathing, if you ever monitored a CO2 ppm meter indoors, where the air gets stuffy when too much CO2 from breathing accumulates. With the current trajectory, by the end of the century, opening the window won’t get you what we now consider fresh air anymore, the air will feel stuffy all the time. We already get less fresh air now than 50 years ago, where CO2 base levels were around 300 ppm, vs. 400 ppm now.

[silverquiet]

It's one of the bonkers things to me that the air my parents breathed as children is measurably different from the air we breathe today. (Sort of like how boomer infants had measurable radionuclides in their teeth due to surface testing of atomic weapons, which helped convince the world to ban the practice.)

I've also heard that the total mass of the carbon we've injected into the atmosphere exceeds all the mass of our built world on the surface, which is sort of awesome to think about, but not in the good sense of the word.

[Winse]

I breathe fine in my greenhouse at 800–1,000 ppm all the time...so ...meh

[layer8]

I feel the urge to open a window at those levels. I wouldn’t want to live in a world where that’s the base level.

[Winse]

you probably won't ever live in world where that's the base level: https://www.climate.gov/news-features/understanding-climate/....

[layer8]

Obviously, as I won’t be alive anymore by the end of the century. I was responding to your suggestion of a “beautiful warm catastrophe/boon” due to high CO2 levels. I don’t see the boon.