With the interview to John McNeill, «Meridiana» series «Percorsi di ricerca» faces the world of environmental historians. McNeill is part of the generation of American researchers, which founded environmental history between seventies and eighties of the last century. However his profile of historian differs from the others because he practiced environmental history in a global dimension and in a transdisciplinary way. In the interview, he talks about many topics: his scientific background and youth studies, the passion for the French historiography, his European research in the Mediterranean countries, the difficult relationship between environmental history and the politics, his concept of history, the growing interest of students for the history of climate and biodiversity.
Keywords: Environmental History; United States; Autobiography.