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During the First World War the first submarine to enter, and...

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gearset

1,310 Posts.

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31/08/22

10:35

Post #: 63427831
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Originally posted by mudguts ↑

Just in case you were wondering, the CO₂ levels on board Apollo 13 rose close to 6%. =60,000 ppm

More recently, correlations between elevated CO₂ levels and headache frequency on board the International Space Station have been observed and research has shown that at levels of 1%, decision-making abilities are impaired and at 2.5% 9ie 10,000 to 25,000 ppm).

I think we have a ways to go & a fair buffer.

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During the First World War the first submarine
to enter, and return, from the Sea of Marmara
has depleted oxygen and increased CO2 to the point
where a match would not strike. It must have stunk
pretty bad too.
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