• Tar_Alcaran@sh.itjust.works
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    3 months ago

    That blue bar is extremely pessimistic. Humans can survive pretty well with 15% oxygen, and do so in several places in the Andes mountains, China and India. I wouldn’t recommend doing it without lengthy acclimatizing, especially not considering my last paragraph, but it’s completely survivable by itself.

    Humans also don’t really have a problem with 25% oxygen, although that will definitely bring down the life expectancy.

    On the other hand, note how those pointers talk about giant insects, megafauna and other scary things. Those are a much bigger problem than the air you’re breathing.