[miohtama]

We are actually getting stupider because of the raise of CO2 consentration in air.

https://thinkprogress.org/exclusive-elevated-co2-levels-dire...

[mleonhard]

That study looks extremely well done.

A couple of other studies showed no effects of elevated CO2: https://news.ycombinator.com/item?id=23161403

[gridlockd]

A more reasonable interpretation of that data would be that we're getting stupider because we spend more time indoors without proper ventilation.

Even if we doubled yearly increases in ppm we'd be a century away from a measurable impact on human cognition for outdoor air.