Meet Caillum Hedderman, an 18-year-old Irish sustainable development and youth voice advocate who is making waves in diplomatic circles. Caillum is a prominent voice for youth representation in global conversations around sustainability and has been actively involved in advocating for young people's participation around global justice issues. As the youngest representative on Limerick City & County Council Strategic Policy Committee on Climate Action, Biodiversity and Environment, Caillum is a leader in his community and works passionately to promote education for sustainable development. He has spoken at various international fora, including the 1st World Non-Formal Education Forum in Rio de Janeiro, where he was the youngest delegate. A scout from a young age, Caillum has held various leadership roles within his National Scout Organisation and was appointed an External Representative of the World Organization of the Scout Movement. He is a member of the National Youth Council of Ireland's Youth 2030 Committee and the Irish Second-Level Students' Union's Education for Sustainable Development Advisory Group.