बिना बिजली के AC — 10 प्राचीन टेक्नोलॉजी जो आज भी हमसे बेहतर थीं

How did people stay cool before air conditioners and electricity? In this video, we explore 10 ancient cooling technologies used thousands of years ago — from windcatchers and stepwells to ice pits, clay pots, courtyards, and more. These smart designs used wind, water, shade, underground spaces, and natural materials to keep homes and people cool. No electricity. No machines. Just clever ancient engineering. Disclaimer: This video is made for educational and informational purposes. Some historical details may vary between sources, and the video may simplify certain scientific or historical explanations for easy understanding.