After four decades of reporting from the continent, Jonathan Dimbleby returns to Africa on a 7,000-mile journey to discover how it is changing. 【Mali, Ghana and Nigeria】 He starts his African journey in the capital of Mali, Bamako, the fastest-growing African city. Following the course of the Niger river, Dimbleby finds not a continent of beggars but of industrious people, some of whom go to extraordinary lengths to make a living, free-diving 20 feet to excavate building sand. Travelling north-east, he sees how tradition is preserved in an area where a sophisticated urban society has thrived for 1600 years. Jonathan gets his hands dirty as the apprentice of a 74-year-old mud mason in Djenne, a town built entirely of mud. In Ghana, one of Africa's freest and most stable countries, Jonathan sees a spectacular festival before playing a game of golf with the King of the Ashanti, who recalls his time working for Brent council. Dimbleby attends the King's court to see what lessons the UK can draw from traditional African structures that promote harmony and reconciliation. Jonathan discovers that the African brain drain is turning into a brain gain as economic opportunity and patriotism d…