And here I was imagining a diverse group of scientists, because science is rarely done by just one person anyway.

I think the cat ended up in a shelter (I don’t know the reason though) and then they discovered it didn’t match the other cat species known about. So it happened the other way around.

That’s kinda exactly what happened. There were 4 known species. One cat ended up in a shelter that was not exactly like any of those, so they decided to take DNA from 35 cats from the 4 (now 5) species and showed the 5th was a separate species.

Sorry to disappoint, but it is stated the effects of hypoxia persists for up to a month. So you would just slowly get back to normal state.

Tldr: A compound that is created when you ferment stevia with a specific bacteria selectively kills cancer cells vs healthy cells in a lab-grown culture.