I have a pedantic correction. The lowest number this article talks about being bad is 945ppm. A ppm of 600 is discussed as "fairly low" co2 levels. They are c

I have a pedantic correction. The lowest number this article talks about being bad is 945ppm. A ppm of 600 is discussed as "fairly low" co2 levels. They are clearly not boohooing over the entire range of 1-2000.