01/08/2020 GMT

Another chance to see Witness History presented by Razia Iqbal. Five extraordinary moments in history as told by people who were there. In this episode, the fall of the Romanian dictator Nicolae Ceausescu, the Salvadoran woman who stood up to her country's government during civil war, the Australian town that was poisoned by asbestos, the soldier who was tortured for siding with France in post-independence Algeria and the agricultural scientist who helped save a billion lives.