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Yakhchal cooling device in Kashan, Iran. Source: knovakov / Adobe Stock.

The Yakhchāl: Ancient Ice-Making Machines in the Desert (Video)

In the arid expanses of the Persian desert , an ingenious ancient technology known as the Yakhchāl has been discovered, revealing a sophisticated approach to ice-making dating back to 400 BC. These...
Part of the Novae Roman military camp. (Kleo73 / CC BY-SA 3.0) Insert: Ancient Roman fridge found at the site. Source: P. Dyczek / PAP

Ancient Fridge Unearthed at Roman Military Camp in Bulgaria Kept Food Cool

Polish archaeologists excavating a Roman military camp in Bulgaria expected to discover some coins; and they weren’t really surprised by the hoards of day-to-day tools and the expansive ancient water...
Looking up inside a Yakhchal

Ancient Advanced Technology: 2,400-Year-Old Yakhchals Kept Ice in the Desert

The ancients were cleverer than some people today assume. They didn’t have rockets or electricity, at least no indisputable proof has been found of such technologies, but they did come up with...
Researchers test their theory by packing the shaft with snow. Image: Peter-Andrew Schwarz

Swiss Archaeologists’ Refrigerator Theory Gets a Cool Result

Swiss archaeologists seem to have solved a mystery at a famous Roman site. They have come to the conclusion that some mysterious shafts at the archaeological site were used as a method of...