Remembering Senegal's Joola disaster, 20 years on

In tonight's edition: It's been 20 years since an overloaded Senegalese passenger ferry sank off the coast of The Gambia, killing almost 1,900 people. Our correspondent reports on the disaster dubbed "Africa's Titanic". Also, a free-falling economy and years of political unrest have taken their toll on Sudanese youth, with thousands leaving the country every day. Finally, we meet the Tunisians wanting to put the country's olive oil industry on the map.