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The Knowledge Back Catalogue

Things worth knowing. Stories worth rediscovering.

A growing archive of history, culture, technology, places and everyday curiosities—following the questions that lead somewhere unexpected.

Browse the Back Catalogues

Latest from the Back Catalogue

  • British postboxes from several reigns stand along a street, showing different shapes and royal cyphers.

    Why Britain’s Postboxes Are Red—and What Their Letters Mean

  • A central television broadcaster commissioning programmes from several independent production studios.

    Why Is Channel 4 Publicly Owned but Funded by Adverts?

  • Two young adults talking after a regular community activity.

    Why Is It Getting Harder to Make a Close Friend?

  • An aircraft flying parallel to spectators beyond a wide safety corridor at an airshow.

    How Do Airshows Keep Spectators Away from the Risk?

  • A new parent holding a sleeping baby while receiving quiet support at home.

    Why Can Birth Trauma Be Missed After the Baby Comes Home?

  • Two realistic portrait images being closely compared for signs of artificial generation.

    Can You Be Trained to Spot an AI-Generated Face?

  • Cutaway view of hidden ice beneath the rocky surface of a mountain rock glacier.

    How Can a Glacier Hide Under a Mountain of Rock?

  • An online discussion growing from a small friendly group into a dense and more contentious community.

    Why Do Online Communities Grow More Negative with Age?

  • A clinician’s hand resting against a glove built into a transparent medical enclosure beside a child’s drawing and toys.

    What Did “Bubble Boy” Teach Medicine About the Immune System?

  • Players collaborating on a block-built town with farms, transport and public buildings.

    Why Minecraft Became a Laboratory for Imaginary Societies

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The Knowledge Back Catalogue

Things worth knowing. Stories worth rediscovering.

A growing archive of history, culture, technology, places and everyday curiosities—following the questions that lead somewhere unexpected.

Curated and edited by Steve Davies.

© 2026 Steve Davies · About

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