This episode of Geek's Guide to the Galaxy is brought to you by Casper, an online retailer of premium mattresses for a fraction of the price, because everyone deserves a great night's sleep.

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Wired.com presents The Geek's Guide to the Galaxy.

And here is your host, David Barr-Kirtley.

Hello and welcome to episode 215 of Geek's Guide to the Galaxy.

Our guest today is Nancy Kress.

She's the author of more than 20 novels,

including the Probability Series and the Green Tree Series.

She's best known for her Novella Beggars in Spain,

which she later expanded into a novel of the same name,

about children who are genetically engineered to never have to sleep.

That story, along with 20 others, are included in her recent short story collection the best of Nancy Kress.

And today's show is brought to you by Casper.

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Seriously, the only way you could not sleep soundly on a Casper mattress is if you were genetically

engineered not to.

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