Yuval Noah Harari & Tristan Harris: 'Truth Decay and the Technology Threat

Yuval Noah Harari and Tristan Harris exchange their views on how technology can work for us - or against us, in a conversation moderated by Somini Sengupta, New York Times International climate reporter at the World Economic Forum in Davos. They ask- what is the state of truth? And what threat does technology pose to our capacity to mobilize that truth in response to urgent challenges - in particular, our climate emergency?