The World Meteorological Organization (WMO) says rising sea levels threaten some coastal cities and the very existence of low-lying states such as the island of Tuvalu, which plans to build a digital version of itself in case it is flooded.

The World Meteorological Organization (WMO) says rising sea levels threaten some coastal cities and the very existence of low-lying states such as the island of Tuvalu, which plans to build a digital version of itself in case it is flooded.
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