Scientists Claim High CO2 Levels Are Making People Dumber
Former Vice President Al Gore wasted no time tweeting out ThinkProgress’ in-depth article, trying to link higher carbon dioxide levels to lower cognition in humans.
The Harvard study exposed 24 people to office environments with varying levels of volatile organic compounds as well as varying levels of carbon dioxide over six work days. The study found that for “seven of the nine cognitive function domains, average cognitive scores decreased at each higher level of CO2.”
“Cognitive function scores were 15% lower for the moderate CO2 day (~945 ppm) and 50% lower on the day with CO2 concentrations around 1400 ppm than on the two Green+ days,” according to the Harvard study, which claims “green” buildings are better for your health.
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“Data collected on nine nuclear-powered ballistic missile submarines indicate an average CO2 concentration of 3,500 ppm with a range of 0-10,600 ppm, and data collected on 10 nuclear-powered attack submarines indicate an average CO2 concentration of 4,100 ppm with a range of 300-11,300 ppm,” according to a 2007 National Research Council report on exposure issues facing submarine crews.
Interestingly enough, the NRC noted that a “number of studies suggest that CO2 exposures in the range of 15,000-40,000 ppm do not impair neurobehavioral performance.”
A study from 1961 exposed “23 crewmen exposed to CO2 at 15,000 ppm for 42 days in a submarine” and the men “showed no psychomotor testing effects but showed moderate increases in anxiety, apathy, uncooperativeness, desire to leave, and sexual desire.”
Another study from 1967 exposed seven men to CO2 concentration of 30,000 ppm. The men “reported no effects on hand steadiness, vigilance, auditory monitoring, memory, or arithmetic and problem solving performance.”
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