Wildfires are having an impact across the world, and Alasdair Keane travels to Vancouver to find out how new developments in technology are bringing hope of earlier detection and prevention. Lara Lewington explores the tech helping patients and surgeons to prepare for surgery. Imran Rahman-Jones chats to US author and journalist Karen Hao about the race for AI domination. And Paul Carter visits SpecialEffect, a charity on a mission to make gaming accessible to everyone.