Sponsored by an initiative of the cultural service of the embassy of France and Centro da Terra, is the lecture, HABITAR A TERRA: A Arte de Construir em Terra Crua (To Inhabit The Earth: The Art of Building with Earth) by Jean Dethier. The conference will be held on two separate dates and locations, Porto, Portugal January 17 and Lisbon, Portugal on January 19. Dethier has been investigating this topic for more than 60 years, having being associated the initiatives that have led to resurgences of this building tradition in industrialized countries. The subject of the lecture framed by a traditional perspective, archaeology, modernity and the future of earth architecture, which will include the publication of a book, as well as films for television, and an exhibition on the subject for 2005 that will offer an opportunity to learn about the buildings, cities and cultures that had used this material since the antiquity.