Yann is a historian specialising in the history of news, media, and communication from the early modern period to the twentieth century. His research explores how information circulates across borders, how media shape public understanding, and how new communication technologies transform society. He combines historical methods with digital approaches, including text mining, network analysis, and artificial intelligence, to study newspapers, archives, and other large-scale historical collections. His work examines both the history of information and the opportunities and challenges created by digitisation and AI, with a particular focus on historical news cultures.