The original post cites direct data from the original studies. Both studies found that an increase of around 300 ppm leads to cognitive decline of ~15-20%. Out

The original post cites direct data from the original studies. Both studies found that an increase of around 300 ppm leads to cognitive decline of ~15-20%. Outdoor CO2 ppm is projected to increase by 300 ppm to 2100. > If indoor CO2 levels rise by the same amount, we can expect a 16% decrease in average brainpower — for every single person on the planet. What part of this is negligible?