Every other Friday on Morning Edition, the Outside/In team answers a question from a listener about the natural world. This week, Jordan White asked: 'How deep does a fallout shelter need to be in order to remain effective? I mean, a nuclear explosion is huge — and I would imagine that the particles would seep into the earth. So how deep can those radioactive particles go?' Editor's note: This segment first aired in September 2022. If you've seen movies like 10 Cloverfield Lane (which has a terrifying trailer) , Blast from the Past (terrifying for very different reasons) or played any of the video games from the popular Fallout franchise, you'd be forgiven for thinking that fallout shelters are, by definition, deep underground bunkers made of concrete and metal.

https://www.nhpr.org/environment/2022-09-02/outside-inbox-how-deep-does-a-fallout-shelter-need-to-be

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