Time travel fiction is a small subgenre of science fiction. Science fiction is a small subset of all the many genres and types of literature. Time machines and time travellers are a niche interest.

And yet, in many ways, all fiction is time travel fiction.

On this week's episode I chart the history and development of time travel, with Prof David Wittenberg, from utopia to hot tubs.

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For full show notes, links, transcripts and more head to wttepodcast.com