Building ventilation invented by ancient Persians and Romans is making a modern comeback
[https://www.cbc.ca/news/science/what-on-earth-solar-chimneys-1.7636962?utm_source=flipboard&utm_medium=activitypub ](https://www.cbc.ca/news/science/what-on-earth-solar-chimneys-1.7636962?utm_source=flipboard&utm_medium=activitypub )
CBC News
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2025-09-18 18:11:36 UTC
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