Bill Gates to deliver the 14th Nelson Mandela lecture

One of the most powerful and wealthiest philanthropists in the world, Bill Gates, will deliver the 14th Nelson Mandela lecture on Sunday at the University of Pretoria's Mamelodi campus. The theme of this year's lecture is Living Together. The Nelson Mandela Foundation says this highlights the need for a new social pact across the globe to end conflict, improve access to healthcare and education, while reducing poverty. Morafe Tabane profiles Bill Gates and also looks at his philanthropic work..