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It will probably be the breathing that will prompt action because maybe we can shrug away drowned cities and infrastructure but really toxic air not so much (or
by pmontra 4y ago
It will probably be the breathing that will prompt action because maybe we can shrug away drowned cities and infrastructure but really toxic air not so much (or do we?)
Effects at https://en.wikipedia.org/wiki/Hypercapnia https://en.wikipedia.org/wiki/Hypercapnia
Anyway drowned infrastructure will directly or indirectly kill a lot of people and that could mitigate the growth of all greenhouse gases except maybe H2O, because there is more and more of that in the air as temperature increases. It's a reinforcing feedback loop.
- prometheus76 4y agoThe chart in the article you linked to shows that currently, the level of CO2 in the atmosphere is 0.04% of the air we breathe, and that lifetime symptoms of hypercapnia do not appear until that number is 1.0%. That means that CO2 levels would have to increase 25 times their current level in order for your fear of hypercapnia to become a problem.
- pmontra 4y agoFrom https://en.wikipedia.org/wiki/Carbon_dioxide#Below_1% https://en.wikipedia.org/wiki/Carbon_dioxide#Below_1% > A study of humans exposed in 2.5 hour sessions demonstrated significant negative effects on cognitive abilities at concentrations as low as 0.1% (1000 ppm) CO2 likely due to CO2 induced increases in cerebral blood flow. Another study observed a decline in basic activity level and information usage at 1000 ppm, when compared to 500 ppm. With some caveats about the quality of those studies.
- kiliantics 4y ago> but really toxic air not so much (or do we?) considering how many people are allowed to die of air pollution as a matter of standard policy, even in "nice" western countries and cities, I don't know that this argument holds