Today I Learned@lemmy.worldEnglish · 4 days ago

TIL that underfloor heating was invented by Neolithic peoples

en.wikipedia.org

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TIL that underfloor heating was invented by Neolithic peoples

en.wikipedia.org

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Today I Learned@lemmy.worldEnglish · 4 days ago

Underfloor heating - Wikipedia

en.wikipedia.org

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3 days ago
https://en.m.wikipedia.org/wiki/Ondol

The page that talks about them in Korea (neolithic) includes a diagram

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