A single six-letter word, Marina, stretches across the absolute limits of human experience, from Italian boat docks to global pop stars, warships, a classified surveillance database and an asteroid. This episode is a linguistic deep dive into how one pleasing sequence of sounds fractured into every corner of human existence.

Starting with its literal meaning as a place for docking pleasure boats, the discussion follows the word's migration into geography, human identity, the arts, hard power and science, revealing how humans reuse and recycle language to an extreme degree. It shows that words do not just have definitions, they have real estate.

• How the word became a branding tool, from Dubai Marina to Marina Point in Antarctica
• Why unrelated surnames converge through false cognates and the mechanics of human speech
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