The students presented their analyses of different parts of Barcelona. In approach to the final proposal for a zero emission Barcelona, they have studied and analyzed different aspects of the city. Vicente Guallart, Willy Muller, Marta Malé, Lluis Viu, Jordi Pages, Areti Markopoulou and Tomas Diez reviewed the projects and discussed about them with the students. Afterwards, the general perspective of the zero-emission project had been evaluated in a semi-roundtable with Director Vicente Guallart.