I'm thankful that I'm living in such country with equal nice countries on one side and rather closed one on other. With enough space to probably house this population in future.
Drought and flooding happening in many places in the world destabilizing grain prices.
Agricultural risks consolidating ag into even more megacorps.
Insurance costs making a lot of currently habitable places uninsurable, and after a few natural catastrophes nobody willing to settle in them.
Wet-bulb temperatures making the deaths of a few hundred thousands of people a frequent occurrence in many parts of the world.
Marine die-offs making the source of cheap high-quality protein in many places no longer accessible and lowering nutrition in several human populations.
It’s not just food security, but also water security. Rainfall patterns are set to change globally, with more frequent and increasingly severe droughts and floods. It doesn’t look good for the world’s biggest economy either
Loss of glaciers in Himalaya ... 500 mil people on the move
Tropic & wet bulb or 50+C temperatures ... 2 mld. people on the move
Deforestations & droughts ... mass migrations, almost everybody affected
Large scale crop failures (temperatures, droughts, polinators ...) ... famines, wars
Biodiversity loses (it's critical) ... famines, huge loses for future ppl
Thermohaline circulation slow/shutdown ... cooling of northern countries, agricultural loses, extreme events
Loss of ice cover (Arctic, Greenland, Antarctic) ... rising oceans for several meters, major cities underwater
Cascading tipping points ... who knows
I'm starting to believe the sooner the system collapses, the better for the future of humanity.