The six teenagers were taking part in an international robotics competition held in Washington DC.
Xanda, the six-year-old son of Cecil the lion, is said to have been shot by trophy hunters.
Cameroon calls Amnesty International propagandists for Boko Haram after critical report, Uganda police arrest dozens of opposition supporters, and more.
The ancient Ethiopian city said to be Islam's fourth holiest site
Travelling from Africa along Europe's great migration route
The women who take dangerous pills to gain weight
The life and death of a South African HIV campaigner
Why are Ghanaians not more interested in science?
What burning issue would you like us to discuss?
An East African take on Sierra Leone's capital
Broadcast time 21:06 BST - 22:00 BST
Broadcast time 23:06 BST - 23:20 BST
Broadcast time 01:06 BST - 02:00 BST
Broadcast time 02:06 BST - 02:30 BST
Nadiya's British Food Adventure