Former British Prime Minister Gordon Brown joins Christiane Amanpour from his home in Scotland to discuss his call for a global response to the coronavirus pandemic. Dr Dennis Carroll discusses the race for a vaccine for Covid-19 and the hit Netflix show "Pandemic." Our Walter Isaacson talks to the great jazz musician Wynton Marsalis about grief and the healing power of music following the loss of his father, legendary jazz pianist Ellis Marsalis, to coronavirus earlier this month.To learn more about how CNN protects listener privacy, visit cnn.com/privacyLearn more about your ad choices. Visit podcastchoices.com/adchoices