13 million along US coast could see homes swamped by 2100, study finds

Combination of coastal population growth and rising sea levels could drive a shift comparable to the 20th century's Great Migration

US coastal areas occupied by more than 13 million people will be at risk of being completely swamped by the sea under a worst-case climate change scenario, new research predicts, potentially leading to a population upheaval comparable to the Great Migration of the 20th century.

Population growth in coastal areas over the course of this century, particularly in vulnerable areas of Florida, is likely to collide with the reality of rising seas caused by melting glaciers and thermal expansion as the planet warms.