JOHN F KENNEDY: To a surprising extent, the sea has remained a mystery. We know less of the ocean of our feet, where we came from, than we do of the sky above our head. MARY LOUISE KELLY, HOST: That ...
In the 1960s, the U.S. Navy was exploring the other "final frontier" — the sea. A series of underwater habitats called "Sealabs" were constructed for scientific exploration on the ocean floor. JOHN F ...
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