The week continues and the Biennial has only just begun. After the excitement of the second day, the third day begins at the Royal Academy of Sciences and Arts of Barcelona with the memory of the days when the Austrian physicist Albert Einstein was in Barcelona and some parts of Catalonia. To relive that time, coinciding with the centenary of the event, two activities will be held. During the day, visitors will be able to access the workshop One hundred years of Einstein in Barcelona, an activity to understand how his contributions to scientific knowledge are treated in institutes and research centres in the state. In the afternoon, the Institutional Event will take place, with two exhibitions about his visit and the dissemination capacity of one of the world's most famous scientists.

The Theatre Building of the CCCB will host Resilient Raval, a cycle of three activities that will talk about how the neighbourhood community lives with the conditions in a context of climatic emergency, from the transformations of school environments to the adaptation of migrant communities in this situation. The highlight of the day, Resilient Raval: the neighbourhood through the eyes of its residents, is a debate-workshop where the epidemiologist Manuel Franco will talk with the public health expert Valeria Cuenca and the neighbourhood resident Lourenço Melo. In addition, residents of the area will share their experience of the climatic events they have lived through over the years.

Nature, biodiversity and science pose thousands of unanswered questions. The phenomena that we try to understand, even though we have normalised them a priori and give them little interest, are a clear example of how complex nature is. To address this situation, science journalist Michele Catanzaro will moderate two consecutive talks at the Institut d'Estudis Catalans. Researching the complexity of the world is a relaxed meeting in the form of an informal debate with the collaboration of the physicists Marta Sales Pardo and M. Ángeles Serrano, where both researchers will share their long experience in the study of this type of systems. One of the complex systems that attracts the attention of the scientific community is the coordinated movements of some birds. During The marvellous movements of the flocks of starlings, through the photographs of Xavi Bou, a visual artist who has managed to capture the complexity of the flight of these birds, and the experience of physicist Cristina Masoller, you will understand a little more about the science behind this spectacle of nature.

Music is science. There are styles that show it more than others and, without a doubt, generative and computational music is a clear example of this. Throughout the afternoon, at the Capella del MACBA, there will be concerts exploring this interaction. From a point of view that approaches an algorithmic version of music, the Quartet Atenea will be the first artistic collective to take the stage, followed by the artist Roc Jiménez de Cisneros, and ending with Antye Greie AGF. Some of the creations will be based on the work of Josep Maria Mestres Quadreny, an international pioneer of computational music and a musical reference in the country.

These are some of today's proposals. To enjoy the Biennial and the +Biennial in full, consult the programme.