I mentioned migration on another forum the other day and look what Ugo Bardi writes today:
.
"But this trudge along the New Trail of Tears is lined with a gauntlet of perils: the area of the globe shrinks with increasing latitude, and the available area of mountains shrinks with increasing elevation. Competition for livable space will be fierce, and the refugia to which many species will be confined as their range shrinks will become extinction traps for some. Barriers to movement, both inadvertent and intentional, can be death sentences to those migrating. Roads and other human structures have dissected the landscape, either preventing motion or making it treacherous. Rivers and seas impede human migration, and border walls seek to prevent it altogether. But the migrations will continue and even increase against all odds; when life in one location is not viable, there is no other option."
.
https://cassandralegacy.blogspot.com...%27s+Legacy%29
.