Oscar Pistorius: the end of the rainbow
Oscar Pistorius was more than a national hero. His success came to symbolise South Africa's triumph over apartheid. Then he killed his girlfriend. Jonny Steinberg explores how his fall left the nation's self-image in tatters
Rokia Traore: 'My vision for Mali' - video
To celebrate the 50th anniversary of the African Union, we asked the singer Rokia Traoré to share her thoughts on Pan-Africanism, the relationship between the continent and the west and her hopes for the future of her country, Mali. What is your vision for Africa over the next 50 years?
Africa quiz - test your knowledge
To celebrate Africa day on the anniversary of the birth of the Organisation of African Unity, 25 May 1963, we have put together this quiz. No Googling now, says David Smith
The War on Drugs: the Observer debate – as it happened
Live coverage of a panel discussion on drug laws with David Simon, writer of The Wire, documentary maker Eugene Jarecki, Rachel Seifert, the director of the documentary Cocaine Unwrapped and others at the Royal Institution of Great Britain. The debate was chaired by Observer editor John Mulholland