Hundreds of studies have missed how much the oceans are rising

A widely used method to calculate sea level rise may be off by as much as a century of change

A person drives a motorbike through a flooded street.

Coastal areas in Southeast Asia — such as Ho Chi Minh City, Vietnam, seen here as water flooded the streets in late 2025 — may be at even worse risk from rising sea levels than previously assumed in some major studies. The region shows some of the greatest discrepancies in an analysis reporting on widespread underestimates of current ocean heights.

Thanh Hue/Getty Images News

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