Airships return to the skies and a serious problem that could cripple long-range space travel
Aug 14, 2022•29 min
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Episode description
They were once the very symbol of modernity, but over the past eighty years, Airships have become objects of curiosity and nostalgia. Now, several new airship ventures look likely to put the zip back into zeppelins. Also, why our bones could be the greatest barrier to colonising Mars.
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