Conspiracy theories and misinformation about coronavirus and the recent election are spreading like wildfire online. These are the sort of phenomena Renée DiResta has been studying for years. She is a disinformation expert and technical research manager at the Stanford Internet Observatory, and she speaks with Hari Sreenivasan about what can happen when false narratives go viral, and what can be done to break the cycle. Originally aired on November 13, 2020.