Star-studded line up for Mandela concert

Beyonce and other international stars have gathered in South Africa for a charity concert honouring Nelson Mandela, a century after he was born. Pharrell Williams, Trevor Noah and Oprah Winfrey are among those headlining the Global Citizen Festival: Mandela 100 at Johannesburg’s FNB Stadium. Model Naomi Campbell and singer Bob Geldof, of Live Aid concerts fame, are also attending. Global Citizen campaigns for an end to poverty.