North-eastern Nigerian city of Maiduguri attacked by child bombers

Nigerian officials say the death toll has risen to at least 15, with dozens wounded, this following multiple attacks by child suicide bombers in the north-eastern city of Maiduguri. Also, Tanzania is three weeks away from presidential polls, but there have already been key changes to the political landscape. And here in Paris, 16 PhD students are challenged to condense years of research work into just 3 minutes, in a contest entitled "My thesis in 180 seconds."