Ian McMillan is joined by some of the most dynamic writers taking part in the Hay Festival: Michael Morpurgo, one of the nation\u2019s best-loved children\u2019s authors and author of \u2018War Horse\u2019, columnist and best-selling feminist chronicler Caitlin Moran, and the award-winning Cameroonian American novelist Imbolo Mbue. They\u2019ll be discussing the stories that change us, and offer hope of change - and explore how we tell stories about \u2018change\u2019, be it ecological, emotional or physical.