Estevão R. Fernandes is an anthropologist and associate professor at the Federal University of Rondonia, Brazil. He has  a PhD  in Social Sciences from the  University of Brasilia and was a visiting scholar at Duke University (North Carolina, 2014) under the advisorship of Professor Walter D. Mignolo. He has published articles in Latin American and European journals about indigenous policy in Brazil and indigenous cosmology. In recent years, has dedicated his studies to understand the Brazilian indigenous sexual universe and received his PhD with a thesis based on a comparative study of  American and Brazilian indigenous gays. He is currently developing researches about  the indigenous sexual diversity in the Brazilian Amazon, where he lives. Barbara M. Arisi is an anthropologist and journalist. She is associate professor at the Federal University of Latin American Integration (UNILA), in Foz do Iguaçu, Paraná, Brazil, where she was the Dean of the Latin American Institute of Arts, Culture and History. She has a PhD in Social Anthropology from the Federal University of Santa Catarina, with a PhD internship at the University of Oxford. She works with the Matis indigenous people from the Vale do Javari, Amazon. She has written about indigenous cosmologies, sexualities economy and their demands in environmental arenas. Currently she is a visiting scholar at the Vrije Universiteit Amsterdam where she studies waste management and circular economy.