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.

  • Dasus@lemmy.worldEnglish
    1·
    4 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%