Suzanne Marmion reports on a Japanese aid worker's strategy to help combat AIDS in the African nation of Malawi. He wrote a song that encourages people to get tested for HIV. The song has become a hit in Malawi.

The World's Adeline Sire looks back on the life of Swedish cinematographer Sven Nykvist. Nykvist, who died yesterday in Sweden, shot many of the movies of the great director Ingmar Bergman.

Today's answer is South Africa's northernmost province of Limpopo, famous for its wildlife parks. Baltimore sound engineer Danny Meltzer travelled to Limpopo to volunteer on a game reserve. He brought back audio samples of what he heard.

Where in the world will we go today?

Hana Baba of station KALW, San Francisco, reports that relatively few Sudanese living in the US take part in demonstrations about Sudan's Darfur region. One reason is that many Sudanese don't agree with the US government's portrayal of the crisis.

Al Turabi

Host Marco Werman speaks with Hassan Al-Turabi, a leading religious and political figure in Sudan, about the current struggle between the United Nations and the Sudanese government over how to deal with the violence in Darfur.

The World's Gerry Hadden tells us why childless British couples are increasingly heading to Spain for fertility treatment.

Host Marco Werman speaks with author Larry Berman about the remarkable life of secret spy Pham Xuan An. Berman recounts An's double life in the biography, "The Perfect Spy." An was a correspondent during the Vietnman War for Time Magazine and Reuters...all the while, he was spying for the Viet Cong communist forces. Yesterday, An died of emphysema.

Richard Branson

Billionaire Richard Branson announced today that he is pledging three-billion dollars toward research and the development of alternatives to fossil fuels. Branson is the chairman of The Virgin Group -- which owns the Virgin Atlantic airline. Host Marco Werman speaks with Slate Magazine columnist David Gross about this latest example of global philanthropy.