Anchor Lisa Mullins speaks with journalist and author Stephen Kinzer about the political crisis in Turkey. At stake is the future of a secular democracy in Turkey, as Turks debate the role that Islam should play in the country's politics.

Our daily geography quiz.

New York City Mayor Michael Bloomberg recently announced a new plan to help the city's most impoverished families. The program will pay parents to do the right things -- like getting their kids vaccinated on time and making sure they attend school. It's a controversial idea. But it's been tried elsewhere. Correspondent Sheri Fink reports from Peru to see how a similar program there is working.

We hear from Rebecca Hoskin, a resident of Modbury, England, as she explains how she got her town to ban plastic shopping bags.

Today's answer is the Plaza de Mayo in Buenos Aires, Argentina. Today marks the 30th anniversary since "the mothers of the disappeared" began meeting in the plaza. These are women whose children were abducted by the military during Argentina's Dirty War. Anchor Lisa Mullins speaks with reporter Marie Trigona, who was at the Plaza de Mayo today.

The World's Marco Werman tells us about Ibrahim Ferrer's final album. Ferrer came to fame as part of the Buena Vista Social Club. He died two years ago, but not before pursuing his musical dream to sing romantic songs.