Thanks to smartphones and social media, since the 2010s, more events than ever before have been caught on camera, visible to anybody, anytime, anywhere around the world. So how is it that the truth of events going on in the world can be more disputed than ever? And what can we do about it? Reflecting on research by the ground-breaking University-based investigative agency Forensic Architecture, who use digital modelling and 3D reconstruction to investigate state crimes, Robert Trafford explains how ‘truth’ has changed in the 21st century, and suggests a possible answer to the ‘post-truth’ challenge, born out of Forensic Architecture’s pioneering work.Robert Trafford is journalist by training, and an assistant director with Forensic Architecture, an human rights research agency based at Goldsmiths, University of London. There, he leads investigative research projects, writes and edits for exhibitions and publications, and supports other team members to bring investigations to publication, and to think about how research can be activated in pursuit of accountability.This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx