On Samhain Weekend, the Culture File Debate takes on the myths and the meanings of fire with Dr Cathy Smith, researcher at the Leverhulme Centre for Wildfires; Donal Lally, co-founder of ANNEX; Andrew Scott, Professor of Modern and Ancient Fire Systems, and Rónán Ó Raghallaigh, an artist whose work involves performance and trance painting. Rónán's Samhain ritual featured in the program can be viewed here