It is very plausible we will go over the 4 degree (celcius) limit on global warming, which would basically lead to virtually irreversable climate change that will rewrite the geography and weather patterns of the entire planet. By virtually every kind of projection huge swathes of currently populated land will be uninhabitable or unable to support their current populations.
So, what do?
Well basically the northern lattitude countries will actually benefit from this, you see the warmer temperatures makes what are cold areas much more liveable and even habitable, in terms of housing with the current population you need the space of about the size of texas (this assumes everyone has a house as well), although its less if you build compact high rise megacities (like hong kong).
literally entire nations will vanish due to climate change and we can expect most of europe more then likely fleeing to russia (due to the now vast amount of previously uninhabitable land that is now useable there).
By the way here is a relative size of russia, its more then enough to support billions and i mean billions of people.
This is one of many projections and its definitely gonna be inaccurate comapred to when the shit hits the fan by about 2050 but its relatively realistic to what we can expect, canada will basically be the new USA, russia will be the world hegemon and most of the world will have no people living there,
So? You gonna go to canada, Antartica (i wonder how many wars will be fought over this area of land) or russia?
Irelands full go away