A tale of monstrous egos, toxic rivalries and injustices behind the discovery of insulin. Kersten Hall, author and honorary fellow at the school of philosophy, religion and history of science at the University of Leeds, recounts the story of feuding scientists behind the discovery of insulin. You can read the text version of this in-depth article here. The audio version is read by Martin Buchanan in partnership with Noa, News Over Audio. Listen to more articles from The Conversation, for free, on the Noa app.  The music in In Depth Out Loud is Night Caves by Lee Rosevere. In Depth Out Loud is produced by Gemma Ware. This story came out of a project at The Conversation called Insights supported by Research England. You can read more stories in the series here. See acast.com/privacy for privacy and opt-out information.