Since 1999 Cristiano Tallè has been carrying out ethnographic research in the Isthmus of Tehuantepec, in southern Mexico, at the indigenous ikoots community of San Mateo del Mar. Starting from the social processes underway in this context, he has dealt with Anthropology of Language, Anthropology of Education, Anthropology of Environment and Landscape and their mutual interconnections, declining these areas of research in the perspective of linguistic, educational and territorial rights native, in a mutualistic perspective of restitution of research work. In twenty years of field research in Mexico, she has developed a specific competence on the themes of school anthropology and educational processes in bilingual indigenous contexts, on indigenous knowledge related to the environment (with particular attention to native ethno-toponymies and to the language-landscape relationship as a strategy for the appropriation of territories) and, more generally, on the relationship between indigenous societies and the State. He is the author of various articles and essays on these themes and of two monographs: School, Costumes and Identity. An ethnography of education in the indigenous community of San Mateo del Mar (Mexico) (CISU 2009) and Paths of words. Language, landscape and sense of place in an indigenous fishing community of southern Mexico (SEID, 2016). As part of the project ‘Eco-fritions of Anthropocene’ he is investigating the interconnections between eco-linguistics, geo-ontologies, environmental conflicts and native territorial rights from the perspective of the ikoots of San Mateo del Mar, in the context of mega-projects of industrial development that are radically transforming the ecosystem and the native relationship with the environment in the Isthmus of Tehuantepec. He has taught cultural and ethno-linguistic anthropology at the University of Naples “L’Orientale” and cultural and political anthropology at the University of Turin.