Why are billionaires building bunkers?

People around the world have been preparing for what they believe will be a major world disaster in the near future. Now, some tech billionaires are joining the trend by building underground bunker complexes to keep them safe if the world order collapses. Do they know something we don't? Neil discusses this with Hannah, from the What in the World podcast, and they teach you some new vocabulary.

Find a full transcript, worksheet and interactive quiz for this episode at: https://www.bbc.co.uk/learningenglish/english/features/6-minute-english_2026/ep-26029

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