1000 to 2500ppm. We are at 400ppm now, up from 280 where we have been pre-industrial times. Way to go until we reach the lower limit. But when I look at many college graduates from today, they must have been living in rooms filled with 10000ppm CO2 in the air for years as otherwise I don’t know where the crap we must endure now comes from. Its time higher education gets back its shine – right now they are factories producing graduates that are unfit for life, cant read or write in complete sentences and are incapable of basic math. But they are full of crazy theories on almost anything. And they are really strong on reality TV. Idiocracy off the screen.
In a landmark public health finding, a new study from the Harvard School of Public Health finds that carbon dioxide (CO2) has a direct and negative impact on human cognition and decision-making.