Why land routes through Africa are more dangerous for migrants than Mediterranean crossings

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Refugees and migrants taking land routes across Africa to get to the Mediterranean and Europe, face extreme violence, abuse and exploitation, with far more believed to be dying there than at sea, a UN-backed report says. Plus, why is Tanzania struggling with a huge shortage of university professors? And how the Eritrean cyclist Biniam Girmay made history at the gruelling Tour de France. Presenter: Audrey Brown Producers: Joseph Keen, Bella Hassan, and Nyasha Michelle in London. Charles Gitonga in Nairobi Technical Producer: Nick Randell Senior Producer: Patricia Whitehorne Editors: Andre Lombard and Alice Muthengi