Uncovering the Shipwrecks of the Transatlantic Slave Trade

Senegalese marine archaeologist Ibrahima Thiaw is leading diving expeditions to search for slave ships that sunk off Goree Island.

Plus the EU is accused of turning a blind eye to abuses by Libyan coastguards who are complicit in people trafficking.

And the UN's drug agency warns of the misuse the painkiller, Tramadol.

(Image: Senegalese marine archaeologist Ibrahima Thiaw. Credit: Getty Images)