Photo: u2.com
'Bill Gates is somebody we're involved with, and he's got the deepest pockets of anyone. But his pockets aren't deep enough to fix this.'

She is the most popular TV presenter in the world - he is the biggest rock star. And they both believe that the world has to do more to address the crisis of poverty in Africa.

In September Oprah invited U2's Bono onto her show to talk to her 20million viewers about his recent visit to Africa - and his new campaigning organisation DATA (It stands for Debt, AIDS, Trade for Africa)

Watch a clip of the interview here

In the programme, Bono urges Oprah's predominantly female audience to take action in the fight against AIDS in Africa. When asked why American women should care, Bono said 'Because any mother knows that the pain of losing a child is the same in Africa as it is in America.'

Bono's appearance was aimed at rallying support for an international effort to alleviate paralyzing debt in Africa and the resulting AIDS epidemic which threatens to kill a generation of Africans. 'If you want to talk to the American people, you come to Oprah,' Bono told the audience. 'This is an emergency.'

More on DATA here

Here are some choice quotes from the video clip:

'Bill Gates is somebody we're involved with, and he's got the deepest pockets of anyone. But his pockets aren't deep enough to fix this. This is a political problem. The good news is that if it's a political problem, it belongs to the people.'

'Oprah: How has this passion fueled your work on stage?

Bono: I was very humbled to find out that the less time I spent in the studio, the better the music seemed to get! The band is really supportive of my work. They just wish the people I was hanging out with weren't so un-hip!'

'The people who drove it home [in England], as much as the students and activists were a part of it, were mothers. That has been really powerful [the support from] mothers and women's groups. They're not scared of me, but when women start getting organized, they [politicians] get scared.'

• Debt Relief Works

• Read Bono's speech addressing the Closing Ceremony of the African Development Bank meetings earlier this year.