Oh goodie.

TL;DR: excess CO₂ in the atmosphere is altering human blood chemistry. It will exceed healthy limits within 50 years if we continue pumping CO₂ into the atmosphere at current rates.

Not to mention what it will do to people who are already unhealthy, and to animal life in general.

And no, beyond a certain level it’s not good for plants, either. That's another myth.

But yeah, let's keep burning gas and oil, and eating meat.

EDIT: see my addendum downthread.

https://link.springer.com/article/10.1007/s11869-026-01918-5

Carbon dioxide overload, detected in human blood, suggests a potentially toxic atmosphere within 50 years - Air Quality, Atmosphere & Health

Anthropogenic activities are increasing the amount of carbon dioxide (CO2) in the atmosphere. There is mounting experimental evidence that lifetime exposur

SpringerLink
Again for people who have my boosts muted, a reply points out that newer data (for years after the range 2000-2020 included in the paper) does not follow the trend, and the paper’s results may not be statistically significant. I'm sure there will be discussion in the scientific literature. If the paper's conclusions turn out to be mistaken, we can all breathe a sigh of relief about this. It doesn’t change the fact that we're still playing games with complex systems all life depends on.