The coastline being predicted in Florida and the Gulf

A new study confirms what leading climate scientists have warned about for many years now: Only very aggressive climate action can save the world’s coastal cities from inundation by century’s end.

We still could limit sea level rise to two feet this century if we keep total warming below 2°C, according to analysis using these new findings. Otherwise, we should be anticipating five to six feet of sea level rise by 2100 — which would generate hundreds of millions of refugees. That isn’t even the worst-case scenario.

This latest research from the journal Nature underscores that what the nation and the world do in the next decade or two will determine whether or not cities like Miami, Boston, New York, or New Orleans have any plausible chance to survive by 2100.

The study, “Contribution of Antarctica to past and future sea-level rise,” analyzes “new processes in the 3-dimensional ice sheet model.” It makes use of mechanisms involving the impact of warming oceans on the unstable Antarctic ice sheet […]