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Message: <blockquote data-quote="Umbran" data-source="post: 9888768" data-attributes="member: 177">So, here's where we note: we are all dead long before the oceans boil anyway.  We show that heating is a bit ludicrous to get people back to something slightly more practical.But, since we are here.Humans sweat to control our internal temperature.  Humans stop being able to live (unprotected) on the surface of the planet when we can no longer cool ourselves by sweating - that happens when what's called the "wet bulb temperature" (a combination of air temperature and humidity) rises above about 35C.Typical models say that point comes globally when average global temperature rises by 12C over pre-industrial levels.  Far, far before the oceans boil, there is nowhere on the surface where you don't just die of heat exhaustion.The Paris Agreement was trying to keep change down below 2C, really hoping for under 1.5C, because by about 3C, the impacts on society start becoming severe enough that our history does not give us a handle on the sociopolitical changes that would follow.  Humans would be alive, but the existence of modern social order becomes... dicey?</blockquote>