Modern universality hardly seems compatible with the diversity of climates. What came to be called International Style, crystallized in popular imagination as unanimous prisms of glass, proposed a homogeneous rationality ignorant of latitudes or habits: the curtain wall and air conditioning would colonize the world with their exact technique. However, reflection on climate has been present since the beginnings of modernity, often associated with the teachings of vernacular architecture – whose aesthetic of necessity would serve as inspiration and vaccine against academic rhetoric –, and regularly returns to the limelight of debate, giving support to different versions of regionalism. Many leaders of the avant-garde – including Taut, Gropius, Le Corbusier, or Neutra – paid close attention to climate, but the most important contributions probably came from scientists, critics, and historians...