Wasn't CO2 much higher in the past, hence why plants were so massive and could support big dino's.
From a website:
As climate change leads to more frequent and intense natural hazards, it is expected that climate displacement will only increase in Bangladesh. The best estimates suggest that up to 18 million people may be displaced by sea level rise alone. http://displacementsolutions.org/ds-initiatives/climate-chan...
Europe us really struggling to deal with the migrants and refugees from Syria. I do wonder how we'll cope with future migrations. It really brings into perspective the idea of a border. Of a country. Just a man drew a line on a map.