this post was submitted on 24 Jul 2023

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Mildly Interesting

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Ancient Iran had air conditioning (lemmy.world)

submitted 2 years ago by FlyingSquid@lemmy.world to c/mildlyinteresting@lemmy.world

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[–] sci@feddit.nl 29 points 2 years ago* (last edited 2 years ago)

Not really mentioned in the picture but Qanats are basically underground aquaducts, bringing water from nearby mountains to the cities. They can be up to 70km long. We went into one when I visited Iran.