Everywhere in the world, before mechanical heating and cooling existed, people built in ways that worked with their local climate. Adobe houses in the American Southwest with thick walls and small windows. Scandinavian sod houses built into the earth for insulation. Japanese wooden pavilions designed for maximum summer ventilation. Yemeni mud-brick towers with wind catchers that channel cool air into the building. Mongolian yurts with precisely engineered thermal performance for extreme cold. Persian ice houses that produced ice in the desert using radiant cooling principles. These vernacular traditions are not quaint folk practices. They are sophisticated, empirically developed responses to specific climatic conditions, refined over generations. They represent accumulated knowledge about how to achieve human comfort with local materials and no mechanical energy input. Regenerative designers take this knowledge seriously as a foundation for contemporary practice. In the Southwest United States, where Pangea mainly operates, the adobe and Pueblo building…