[OutOfHere]

CO2 levels over 600 ppm indoors already start to hurt cognitive function and cause drowsiness in me. Due to the cold, I have been managing with 550 ppm in the winter, otherwise with 500 ppm in the summer. A decade ago, the indoor level easily was 100 ppm lower. This is becoming a problem fast as I run up against the 600 ppm threshold. The older you get, the more intolerant you become to high CO2 if you want good cognitive function.

The point is that no, sulfur injections aren't going to fix climate change, nor will a solar shield. The reason is that they leave high CO2 on the ground which harms cognition. One can't really make a living with a deteriorated mental function.