[bartimus]

No not at all. I'm saying the alarming message gets vague beyond "humanity has made a contribution to global warming".

I try to research the available science but have trouble finding clear answers. The most accurate data seems to comes from the ice samples. But that only dates back 800.000 years.

You mention the Triassic period. Co2 levels were 2000ppm during that time. That sounds like a dramatic increase (from 0.04% to 0.2%). But then I also read we already often experience such levels at home or at work. For office workspace 1000ppm is considered acceptable and official limits are set at 5000ppm (as 8-hour TWA). I also read plants will grow ~5 times as fast. More faster reforestation?

We know there will be a change. But how accurately are we able to predict what that change will look like? Is there a strong consensus about it?

[ahje]

CO2 makes water acidic. Acidic water screws with a lot of aquatic organisms. Aquatic organisms create a large amount of the planet's oxygen. Considering the marine ecosystem is extremely sensitive, well, I can see how high CO2 could be a problem even if we humans can still breathe just fine.

[bartimus]

Thanks for this. I wasn't aware the marine ecosystem is so sensitive to changes.