Our grandparents were right about the value of fresh air:

Our grandparents were right about the value of fresh air: https://open.substack.com/pub/constructionphysics/p/we-need-more-research-on-how-co2?r=fq8q&utm_campaign=post&utm_medium=web

President of Antares Industries. Mom to 2 little boys. Nuclear energy advocate. Formerly SpaceX and Opendoor. Angel investor. 

DHH was early on this one. bought CO2 monitors as soon as I heard him talk about this.

Findings here seem consistent with my mental model where the CO2 itself isn't so bad, but we're wired with a CO2 anti-suffocation alarm that causes increased anxiety when CO2 spikes suddenly. That would be why the submarine studies didn't see significant performance degradation.

Amen, one of the reasons I love the country side

I followed up on this and found an SSX review useful
https://slatestarcodex.com/2018/08/23/carbon-dioxide-an-open-door-policy/

This paper is also convincing, but "Confirmation of these findings is needed."
https://ehp.niehs.nih.gov/doi/10.1289/ehp.1104789