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
I used to think that even if our willful ignorance caused human civilization to collapse, at least humans as a species would survive. Now it's not clear.
I'm just going to use the link to that paper to respond when anyone explains why they need to buy a car that runs on gasoline, or refuses to reduce how much meat they eat.
Honestly, this should be the number one story in every media outlet. I wonder if it will even be covered at all.