🌅 New Orleans Sea Rise at a “Point of No Return”

SOURCE

Törnqvist et al. (2026)

WHAT TO KNOW

• A new paper by a team of interdisciplinary researchers at several U.S. institutions suggests Louisiana should immediately begin planning how to relocate people out of New Orleans, arguing sea level rise has reached a “point of no return” that will leave the city completely surrounded by water by the end of this century. The researchers found southern Louisiana is facing up to 7 meters (23 feet) of sea-level rise and the loss of three-quarters of its remaining coastal wetlands within the coming decades, which will cause its shoreline to migrate as much as 100 kilometers (62 miles) inland, thereby engulfing New Orleans and even Baton Rouge further north.

WHY IT MATTERS

• Louisiana is home to the most vulnerable coastal zone in the world and faces some of the highest sea level rise of anywhere on the planet. New Orleans itself sits in a bowl-shaped basin below sea level, putting 99% of its population at risk of severe flooding, the worst exposure of any U.S. city. Louisiana has also lost 2,000 square miles of land to coastal erosion since the 1930s (equivalent to the size of Delaware), and a football-field sized area is wiped by erosion out every 100 minutes. The authors of the present study say their work isn’t so much of a “prediction” as it is a reading of the historic geological and paleoclimatic evidence, comparing today’s warming temperatures with a period 125,000 years ago that was similarly warm and caused sea level rise.

CONNECT THE DOTS

• The authors say New Orleans is in a “terminal condition,” describing the present moment as an “opportunity for palliative care” by transitioning residents and addressing the economic fallout. While the U.S. has never moved a major city before, climate change has forced people to relocate in recent years, including in Louisiana and Alaska. Abroad, some nations have begun the process of relocating capital cities due to climate change, like Iran, which is moving its capital out of drought-stricken Tehran, and Indonesia, which has decided to move its government out of the rapidly sinking Jakarta to a new city currently under construction in the jungles of Borneo.