Accompanying activist Nardjes with his camera, Karim A?nouz documents the youth culture, which is confidently taking to the streets for a democratic future in Algeria, whose independence their parents and grandparents have already fought.
Michael Mosley explores the latest science about how our personalities are created - and whether they can be changed.
Despite appearances, Mosley is a pessimist who constantly frets about the future. He wants to worry less and become more of an optimist.
He tries out two techniques to change this aspect of his personality - with surprising results.
And he travels to the frontie...