Why did railways start using Greenwich Mean Time? 🚂 This week on Infinite Monkey Cage, Robin Ince and Brian Cox wind up at the Royal Observatory in Greenwich – arguably the centre of time – to uncoil the mysteries of what time is and how on Earth (…and on moon) we keep track of it. Taking the time to join them are comedian Marcus Brigstocke, curator of the Royal Observatory Louise Devoy, and Head of the National Timing Centre Leon Lobo. Infinite Monkey Cage | Listen on BBC Sounds 🎧 | BBC Radio