4 ms·
"and twice as much carbon as Earth’s atmosphere. " "As levels of carbon dioxide rose from 550ppm to 945ppm to 1400ppm, subjects’ scores under most headings dec
by EGreg 5y ago
"and twice as much carbon as Earth’s atmosphere. "
"As levels of carbon dioxide rose from 550ppm to 945ppm to 1400ppm, subjects’ scores under most headings declined substantially. (Problem-solving ability also seemed to suffer as levels of volatile organic compounds rose.)"
"2,000-5,000 ppm: level associated with headaches, sleepiness, and stagnant, stale, stuffy air; poor concentration, loss of attention, increased heart rate and slight nausea may also be present. > 5,000 ppm: This indicates unusual air conditions where high levels of other gases also could be present."
"Based on preliminary analysis, the global average atmospheric carbon dioxide in 2020 was 412.5 parts per million (ppm for short), setting a new record high amount despite the economic slowdown due to the COVID-19 pandemic."
hmm
- sometimeshuman 5y agoMany stressors have an adaptation phase. It is plausible those effects get reduced with prolonged exposure in humans although that wasn't necessarily the case in mice: "Long-term exposure of mice to 890 ppm atmospheric CO 2 alters growth trajectories and elicits hyperactive behaviours in young adulthood" https://pubmed.ncbi.nlm.nih.gov/34731494/ https://pubmed.ncbi.nlm.nih.gov/34731494/
- lmilcin 5y agoI think I red a study, many years ago, about lowered performance in Mexico City due to their local higher CO2 concentration.
- JamisonM 5y agoI feel like if it was many years ago lead pollution would be a nearly insurmountable confounder in such a study, but if you could find it I am sure it would be an interesting read.