First of all, people can move themselves. They don't need someone else to move them.

Floridians have a continent of 49 other states to move to.

The Bangladeshis are in a tougher spot, since they're approaching 200 million and might need to cross a political border.

If the rest of the world closes its borders, maybe they'll have to look into landfills, flood walls etc. Or maybe they can settle the newly habitable Siberian lands.

>If the rest of the world closes its borders, maybe they'll have to look into landfills, flood walls etc. Or maybe they can settle the newly habitable Siberian lands.

The "if" is funny. There's already many hundreds of millions of poor people around the world that have the borders closed to them. I don't see why 200M extra poor Bangladeshis wouldn't suffer the same fate.

And there is no reason to believe Siberia will be habitable, at least not in exactly the timeframe it needs to be to offset other habitable areas that are lost.

Climate change will be a slow moving, albeit accelerating, series of crisis that will grind those who are poorer and don't have the power to move to suffer losses.

I find this comment naive in the extreme. There is a strong overlap between areas subject to the worst impacts of climate change, and areas hosting some of the poorest people in the world (or in their countries).

With respect to the "If" statement around countries closing their borders - seriously, where have you been? The sudden and significant rise in popularity of the far-right in Europe almost coincides to the Syrian refugee crisis, and that was roughly one million people. In my country (Australia) we give our Pacific islands neighbours platitudes while still pushing coal on the rest of the world, and then indefinitely detain those seeking asylum for years (including years after they've been assessed as legitimate refugees). Countries are now proposing the Australian approach to "protect" their own borders. To think that this issue (of climate-change forced population movements) will not cause existential threats for those people is plainly wrong.

> Or maybe they can settle the newly habitable Siberian lands.

Because of Russia's famous open borders policy, and China happy to open their borders to let refugees pass through? What planet do you live on?

That's like saying the US would open its southern border to let migrants pass thorough up to Canada.