Tldr: 3-6 ft of sea level rise is inevitable, which will result in at least 230 million climate refugees fleeing coastal areas around the world. At this point the Greenland and West Antarctic ice sheets are almost guaranteed to collapse, which will result in 40 ft of sea level rise and more than a billion climate refugees. And the only thing cutting carbon admissions now will do is slow the rate at which the world warms and give these refugees more time to escape the coasts.
Slowing that rate is still worth doing. And there’s still hope to limit the damage. But what a wonderful world we’ve bequeathed to our children, huh?
Climate flight on the coasts will push people inward to landlocked locations. Many of which are experiencing ongoing drought and other issues sourced from humanity’s dominance over the planet. The coming age of tragedy will be an interconnected web of human fault and failures. Among the battles we must win for a better tomorrow is the fight against nationalism. Migration will be a key element of protecting the vulnerable from climate disaster. We cannot afford to abandon or write off our neighbors.