Airships return to the skies and a serious problem that could cripple long-range space travel

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Manage episode 337804830 series 58
By ABC Radio. Discovered by Player FM and our community — copyright is owned by the publisher, not Player FM, and audio is streamed directly from their servers. Hit the Subscribe button to track updates in Player FM, or paste the feed URL into other podcast apps.
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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