Gus Willard Van Beek (1920-2012, Dept. Anthropology, National Museum of Natural History, Smithsonian Institution) on the thermal properties of traditional earth and mud homes, citing a 1970s experiment in Iran. Stellar result from the "free dug at site material".
In the late 1950s James Marston Fitch and Daniel P. Branch measured temperatures in traditional adobe homes in the U.S. Southwest. You really do not need air conditioning in a house built like this: the interior temperature is stable. (Example of a traditional home to the right.)
3:18 PM · Oct 9, 2021