I used to believe that excess CO2 causes mood/cognitive problems. I changed my mind while participating in this discussion: https://news.ycombinator.com/item?

I used to believe that excess CO2 causes mood/cognitive problems. I changed my mind while participating in this discussion: https://news.ycombinator.com/item?id=23157422 https://news.ycombinator.com/item?id=23157422