Interesting, I have some vague recollections off hearing about this. But according to your link, IPCC says it's not a plausible scenario in the medium term. An

Interesting, I have some vague recollections off hearing about this. But according to your link, IPCC says it's not a plausible scenario in the medium term. And I'd say that even 8 degrees of warming wouldn't be enough for extinction or end of human civilization. But there it could be double digit percentage of human population dying.