The Hawa Mahal in Jaipur sits in one of India's hottest regions, facing the flat, relentless push of desert wind. Its hundreds of small latticed windows, or jharokhas, are arranged so that the wind speeds up as it is squeezed through each narrow opening—the very principle now known in physics as the Venturi effect, cooling the air as it accelerates into the palace. No mechanical system, no electricity, just geometry doing the work.
A similar environmental awareness shapes traditional South Indian courtyard homes. Open to the sky at their center, they allow warm air to rise and escape while drawing cooler air through shaded lower levels. It required no complex machinery, only generations of makers paying close, sustained attention to their environment and passing that awareness down.