[duozerk]

We're at +1.5C, more or less, and growing the usual grapes in France - of all places - is already becoming much harder (they keep dying of frost after waking up due to wild temperature swings).

At +5C, there is no growing food in any substantial amount outside of high tech, low yield approaches; approaches that depend on complex planetary supply chains (both for initial deployment and maintenance), which will have disappeared by then.

[trashtester]

> At +5C, there is no growing food in any substantial amount outside of high tech,

It seems you have some specific geographic region in mind. Earth has a lot of regions that are more than 5C colder than the most fertile regions.

People adapt. People move. Sometimes they fight wars about it. This has happened many times before.

We're currently living it the most peaceful, prosperous and safest period that humanity has ever experienced. (Despite what social media is tricking our brains into believing). In the future we will surely live through periods that are closer to the average. But I'm not seeing any extinction-level events due to climate change within the next few hundred years.

AGI or nukes, on the other hand, they both DO have the potential to end us as a species.

[saagarjha]

You seem to think that a couple of degrees just applies uniformly across the planet, or to a specific location, transforming somewhere cold into something which is now suddenly hospitable. That isn't how climate change works. It doesn't mean that Canada will suddenly be nice and balmy year-round; it means that the climate will fluctuate more wildly and wreak havoc on our agriculture, as described in the comment above. The temperature change is a global average, and your local experience is going to be a lot worse at the extremes.