Marked by the diversity of initiatives linking science and art and by new presentation formats, the 15th Congress of the Network for Popularisation of Science and Technology in Latin America and the Caribbean (RedPOP) saw heated debates on science, culture, politics and society. Between 21st and 25th August, it brought together in Buenos Aires (Argentina) about 400 participants from 14 countries in order to share new visions, initiatives and research work in science communication. During the event, which included a vast cultural programme, a series of challenges were raised for the future