The president of this island nation just gave an unusual thank you for a sobering reason.

Islands don't have to be underwater to become uninhabitable.

The only country with parts in all four hemispheres, Kiribati, sits in the middle of the Pacific, straddling the Earth's equator.

It seems nice — the beaches are white-sand-and-palm-trees scenes right out of a travel guide. Just over 100,000 people live on its 33 atolls and islands.

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Natural Resources Defense Council