On: Hammerhead sharks are first fish found to ‘hold th...

[hutzlibu]

"You're physically trying to get oxygen, it's just not working"

Nitpick, but not working as good, because some humans do manage to get enough on Everest, to not need extra supplied oxygen.

[lostlogin → hutzlibu]

I understood it as thing that could be tolerated for a short time by some humans. They will die as their saturations are falling, but they get up and then down within a narrow window.

https://en.m.wikipedia.org/wiki/Death_zone

[hutzlibu → lostlogin]

You surely could not live there, but some people managed for astonishing amount of time.

(and before they proofed it, it was thought to be literally impossible without extra oxygen)