“Sick” is the building, where people always use electric appliances and smoke and it is not built with the necessary materials, which do not retain the harmful particles in the rooms. How can we apply the bioclimatic architecture principals, in order to contribute to the protection of the environment and our health? Marina Nikolova tried to find answers to those questions and more at “Eco week 2009” in Athens and in a conversation with architect Eri Poulyanaki.