Celebrated Canadian classical pianist Marc-Andre Hamelin talks to anchor Lisa Mullins about his new solo album "Marc Andre Hamelin in a State of Jazz"

The answer to our Geo Quiz today is Persepolis. The city was the ceremonial capital city of ancient Persia. Today it's a world heritage site in southern Iran. European travel guru Rick Steves shares his impressions of Persepolis.

Hilary Clinton and Barrack Obama made their first joint campaign stop in the town of Unity, New Hampshire. New Hampshire's the state where Clinton made a comeback during the primary season. It's also a state where voters are upset about the Iraq war and are likely to take it out on the Republicans in November. The World's Matthew Bell spoke with voters there.

For today's Geo Quiz, we're looking for the ceremonial capital city of ancient Persia.

There were dire predictions for the fate of Myanmar's cyclone survivors after the military government there kept out international aid. But it appears that the situation for the survivors may not be as bad as originally feared. Simon Montlake reports from Bangkok.

Bill Gates is officially stepping down as head of Microsoft today. He's devoting himself full-time to his work as a philanthropist. We get some snapshots from around the world of what the people think of when they hear the name Bill Gates.

Anchor Lisa Mullins and The World's book critic Christopher Merrill speak with Bosnian author Saša Stanišic about his debut novel, "How the Soldier Repairs the Gramophone".

Web extra: more from Lisa Mullins's conversation with Stanišic

This weekend, London hosts a 90th birthday concert for Nelson Mandela. It's appropriate: music has accompanied the former South African president throughout his journey from political prisoner to international statesman. The World's Alex Gallafent reports.

Video: birthday wishes for Nelson Mandela

Author Cathy Buckle writes a weekly email letter to friends and family about living conditions in her country, Zimbabwe. We read an excerpt from one of her recent letters. It's called, "To Stay Safe, Stay Silent."

The climate of fear and intimidation in Zimbabwe has many in the international community wondering how they help bring change in the southern African nation. John Makumbe, a lecturer in political science at the University of Zimbabwe in Harare, has some suggestions. He speaks with anchor Lisa Mullins.