Director of Psychedelic Liberty Summit. Chacruna, Online Conference, April 25-26, 2020.
Director of Queering Psychedelics. Chacruna, Brava Theater Center, San Francisco, June 1-2, 2019.
Director of the Women and Psychedelics Forum. Chacruna/ East West Psychology Program, CIIS, San Francisco, Nov 19, 2018.
Director of the Symposium Cultural and Political Perspectives on Psychedelic Science. Chacruna/ East West Psychology Program, CIIS, San Francisco, August 18-19, 2018.
Director of the Plantas Sagradas en las Américas (Sacred Plants in the Americas). CIESAS/DPC/Chacruna, Ajijic, Mexico, February 23-25, 2018.
Organization of the Plant Medicine Track. 2017 Psychedelic Science Conference. MAPS, Oakland, April 19- 24, 2017.
Director of the Jornadas Planta Sagradas em Perspectiva (Sacred Plants in Perspective Conference). Unicamp, Campinas. August 9-11, 2016.
Director of the “Drugs, Politics and Culture: Perspectives Brazil-Mexico.” CIESAS, Guadalajara, Mexico, October 5-6 2015.
Lauching of the book “Ayahusca y Salud” and round table “Sacred Plants in Mexico”. Escuela Nacional de Antropología y Historia (ENAH), Mexico City, Mexico, September 26, 2013.
Director of the Workshop Ayahuasca Healing: Medical, Legal, and Cultural Considerations. MAPS 25th Anniversary Conference, Oakland, USA, December 8-12, 2011.
Co-organization with Open Stiching Foundation and Maps of the “European Ayahuasca Research Symposium”, Amsterdam, Netherlands, June 17, 2011.
Director of the “Amazon Conference: Amazonian Shamanism, Psychoactive Plants and Ritual Reinvention”. Institute of Medical Psychology, Heidelberg University, Heidelberg, Germany, Dec 6ht-7th, 2010.
Co-organization with Henrik Jungaberle and Rolf Verres of “The Globalization of Ayahuasca: An Amazonian psychoactive and its users”. Institute of Medical Psychology, Heidelberg University, Heidelberg, Germany, May 16th – 18th, 2008. (See pictures)
Co-organization of the Symposium “Drugs: Controversies and Perspectives” (“Drogas: Controvérias e Perspectivas”), History Department, University of São Paulo (USP), São Paulo, Brazil, September 29th-30th, 2005. This meeting generated the book Drogas e Cultura: Novas Perspectivas (Drugs and Culture: New Persepectives).
Director of the “First Congress on the Ritual Use of Ayahuasca” (“I Congresso sobre o Uso Ritual da Ayahuasca – I CURA”), Universidade Estadual de Campinas (Unicamp), Campinas, Brazil, November 4th – 5th, 1997. The congress generated the book O Uso Ritual da Ayahuasca (The Ritual Use of Ayahuasca). (See also Programação em Português)
Organizing Committee and Scientific Committee of the “2016 World Ayahuasca Conference”. ICEERS, UFAC, Rio Branco, October 17-22, 2016.
Organizing Committe and Scientific Committee of the “III Meeting of Anthropology México-Brazil”. CIESAS, Instituto Cultural Cabañas, Guadalajara, Mexico, October 1-3, 2015.
Organizing Committee and Scientific Committee of the “2014 World Ayahuasca Conference”. ICEERS, Palau de Congresos, Ibiza, Spain, September 25-27, 2014.
Scientific Committee of the “II Congress of Traditional Medicine and Public Health: Sacred Plants, Culture and Human Rights”. Autonomous University of Mexico, Toluca, April 3-5, 2014.
Organizing Committee of the “International Congress about Drugs, Law, Health and Society”. Federal University of Brasília (UnB) & Federal Council of Psychology (CFP). Museu da República, Brasília, Brazil, May 3-5, 2013.
Co-organization with Marcelo Mercante et. al of “Ayahuasca and the Treatment of Dependency”, Anthropology Department of the University of São Paulo (USP), São Paulo, Brazil, September 12-14, 2011.
Moderation of the Ayahuasca Track in the “Breaking Convention: A Multidisciplinary Convention on Psychedelic Consciousness”, Kent University, Canterbury, UK, April 2-3, 2011.
Moderator of the “Ayahuasca Track” (22 presentations). 2010 Psychedelic Science, MAPS, San Jose, USA, April, 16-18, 2010.
Consultancy to the “First Brazilian Meeting on Shamanism” (“Primeiro Encontro Brasileiro de Xamanismo”), promoted by Associação Lua Cheia – Pax, São Paulo, Brazil, March 13th -20th, 2005. (See also Partial Biographies of the presenters in Portuguese)