The ecosystem migration (usually to higher latitudes) due to climate change is quite well-documented. And you want to do it back and forth?
I am not saying I have all the answers, I am just not convinced that "returning" is strictly better option.
I am not saying I have all the answers, I am just not convinced that "returning" is strictly better option.
It's not "just" that people will go to the beach more in the north during their holidays, you do realise that?