Anchor Lisa Mullins gets the latest on the assassination of a government minister in Lebanon today from the BBC's Tim Hewell. Pierre Gemayel, Minister of Industry, was a prominent Christian politician opposed to Syrian involvement in Lebanon. President Bush is calling for an immediate investigation into the murder.

The World's Marco Werman talks with French composer Eric La Casa, whose interest in the sound coming out of air vents around Paris raises the question: is this really music?

The answer is our Geo Quiz is the Indian state of Uttar Pradesh. Reporter Mark Dummett finds out why a small market town named Vrindavan has become home to thousands of widows from around the country.

Where in the world will we go today?

Anchor Lisa Mullins speaks with The World's Franc Contreras about the political unrest in Mexico. Today, the losing presidential candidate, Andres Manuel Lopez Obrador, is proclaiming himself president and creating a "mirror cabinet" to give Mexico an alternate government.

The World's Jeb Sharp on the debate among aid agencies about whether to stay neutral in times of extreme conflict. The debate is sparked by the violence in Darfur and the increase in attacks on aid workers.

Anchor Lisa Mullins speaks with Ashis Brahma, a physician with the International Rescue Committee, about attacks on himself and those he works with in Chad, along the border with Sudan's Darfur region. There has been an upsurge in attacks against civilians in Darfur this week. The Sudanese government says it's reached an agreement with the United Nations about bringing peacekeepers to Darfur.

Listen to the extended interview (mp3, 7:05)

The World's Jason Margolis reports on research to genetically modify cotton to produce edible seeds. The researchers hope it will pave the way to provide a new source of protein for millions of people around the world.

Anchor Lisa Mullins speaks with Parvinder Thiara, a Harvard senior who's just been named a Rhodes Scholar. Thiara's life changed two years ago when his grandfather died as a result of drinking contaminated water. Thiara, a chemistry major, is now focusing on protecting water supplies in the developing world.