Aid: 'We're not arguing for a culture of dependency. We're arguing to end it'
On a trip to Ghana, one of Africa's great development success stories, Observer editor John Mulholland speaks to leading economist Jeffrey Sachs and U2's lead singer Bono about the politics and economics of aid

TEDxObserver: the challenge of inspired ideas
TEDxObserver is our day-long festival of ideas, where some of the world's most interesting and committed people share their vision of a better world. Join in and you too can be 'fascinated, enthused, exhilarated, moved and amused'

'In 10 years' time, Ghana may not require any aid at all'
Ghana is one of Africa's great successes – a stable and thriving country that is testament to the impact of aid. As pressure on these budgets grows, Observer editor John Mulholland travels to the country to assess its progress

Winnie Madikizela-Mandela: 'The Observer saved the ANC leadership from execution'
Winnie Madikizela-Mandela explains how former Observer editor David Astor saved Nelson Mandela from the death sentence

Did former Observer editor David Astor save Nelson Mandela's life?
David Astor, former editor of the Observer, was a journalistic giant. A new film asks whether his anti-apartheid campaign saved Nelson Mandela's life