Relocating people (whether intentionally or not) will be what destroys humanity first. There is no scenario where billions of people leave the tropics and inte

Relocating people (whether intentionally or not) will be what destroys humanity first. There is no scenario where billions of people leave the tropics and integrate conflict free into northern society. It's not even just down to cultural or racial issues, an agrarian population doesn't have many places to fit in an industrial economy and has no places to fit in a service economy.