this post was submitted on 20 Jun 2024
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https://en.wikipedia.org/wiki/Hyperoxia

This was a screenshot I took months ago while watching a Geology Hub upload on YT. It was a lightbulb moment for my understanding of mass extinction events, (the largest was 250ma). I've referenced this multiple times, so thought I might share. Perhaps you find it as interesting as I do.

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[–] Tar_alcaran@sh.itjust.works 2 points 2 months ago (2 children)

You can absolutely breathe higher partial oxygen pressure unaided for a long time. Hyperoxia isn't all that lethal and definitely not quickly, if you're only visiting, there's no problem.

And if you want to live there, you should be much more worried about all the brand new diseases you don't have immunity to, or the bugs that are bigger than you.

The low oxygen is definitely a problem, especially if you need to run away from the stuff mentioned above.

[–] Dasus@lemmy.world 1 points 2 months ago

Also someone like a proper Sherpa sherpa from the Himalayas can function with oxygen that's comparable to 7% sea level oxygen.

And there are towns with elevation so high the oxygen is equivalent to 15% sea level oxygen.

So this chart has pretty narrow limits. Sure, the legend does specify "breathe forever unaided", but someone like a well accustomed sherpa who regularly climbs Mt Everest would have a much wider range than 20-25%

[–] MonkderDritte@feddit.de 0 points 2 months ago

you should be much more worried about all the brand new diseases you don't have immunity to

The diseases of amphibians, who are likely similiar to something you inherited from your mother already?