Duncan is an Irish architect (2005) doing an action research based PhD in “Architecture of Contemporary Metropolitan Territories” in ISCTE on “Community-led Ecocities”. He worked on Horizon2020 project UrbanA (Urban Arenas for sustainable and just cities) with the "Centre for Ecology, Evolution and Environmental Changes" (CE3C) at Lisbon University Faculty of Sciences (FCUL) until the projects end and now leads the “Community of Practice” extension. He also supported the ERASMUS+ funded "Ecovillage Transition in Action" (ETiA) project with the Global Ecovillage Network (GEN). He is the co-president of the "European Network for Community-Led Initiatives on Climate Change and Sustainability" (ECOLISE) and was part of their delegation to COP25 in Madrid 2019. While living in Curitiba, Brazil (2014-18), he attained his masters in Environment and Development (2018) at PPGMADE in UFPR, doing the urban line of a multidisciplinary course. Living in Barcelona (2006-13) he co-founded the local Transition group, gained his Permaculture Design Certificate (2010) at Mas Franch and was active in the Barcelona Indignado square occupation of 2011. He worked with Eco Intelligent Growth (EIG) on LEED and Cradle to Cradle certification, collaborated with William McDonough and developed a White Paper for CADS, the Sustainable Urban Development of Barcelona for the Catalan Government. An Ecocity activist since Banja Luka, Bosnia (2003), he set up the Curitiba Ecocity Festival during the 2017 Ecocity World Summit, supported Ecocity Builders online conference in 2020 and participated in the 2022 Ecocity World Summit. He was part of the Climate Social & Climate Justice Caravan, with indigenous groups, during COP15 in Copenhagen 2009 and co-created the 1st Curitiba Indigenous Week in 2016. He initiated an urban initiative in Ayacucho, in the Peruvian Andes, in 2018. His work to create community gardens and develop an urban bicycle greenway in Dublin was mentioned at the Venice Art Biennale (2005). He was active in Irish and UK Climate Camps 2007-09. He loves standing in rivers and Asterix books. In his curriculum Ciência Vitae the most frequent terms in the context of scientific, technological and artistic-cultural output are: Sustainable Cities; Ecocities; Citizen Participation; Degrowth; Climate Breakdown;