CO2 make dumb
October 18, 2012 11:25 AM Subscribe
posted by stbalbach (50 comments total)
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Have you ever been in a room with lots of people and not great ventilation. Or even a room with normal ventilation. You may be cognitively impaired due to elevated levels of CO2 once considered safe now thought enough to make you a little dumb
. 600ppm is now thought too much, but “there are plenty of buildings where you could easily see 2,500 ppm of CO2 — or close to it — even with ventilation designs that are fully compliant with current standards.. classrooms frequently exceed 1,000ppm."
The 36-page paper
is freely available. The 2011 average annual concentration of CO2 in the atmosphere (Mauna Loa Observatory) is 391.57 ppm
, and steadily rising.