The cascading events that might lead to the end of organized nation-states in many parts of the world due to climate change look like a real possibility now.
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