Talk of the Nation

Israel blames Iran for attacks in the capital cities of India, Georgia and Thailand, further escalating Israeli-Iranian tensions. Washington Post columnist Jackson Diehl believes that Iranian leaders are exhibiting signs of desperation.

GOP presidential candidate Rick Santorum swept caucuses in Minnesota and Colorado and the Missouri primary, gaining considerable ground on Mitt Romney's primary lead. NPR's Ken Rudin and Dan Balz, of the Washington Post, recap the week in politics.

In January, a group of residents in Duluth, Minn., launched an anti-racism effort called the Un-Fair Campaign. They created ads, posters and billboards aimed to raise awareness about racial injustice and asking white people to recognize institutional racism.

The posters have prompted thoughtful discussion in some circles and backlash in others.

The organizers are also planning other events — a series of discussion, speeches and films, around the city.

'Cool' is a word that has come to mean so much more than just a temperature. It can be an attitude, a style or a sound. The word continues to evolve and has a variety of meanings.

In a new collection of essays, Black Cool: One Thousand Streams of Blackness, writers explore the definition of coolness within African-American culture. Writer Rebecca Walker edited the book and compiled a series of essays aimed to build a "periodic table of Black Cool, element by element," to explain the myriad meanings of blackness in the United States today.

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NEAL CONAN, HOST:

This is TALK OF THE NATION. I'm Neal Conan, in Washington. Last Friday, President Obama came up a compromise: Catholic and other religious institutions would not have to provide contraception coverage for their employees directly, but the wider goal of women's health would be met because their insurance companies would have to do it.

A medical study published in Science finds that an FDA-approved skin cancer drug can reduce Alzheimer's-like symptoms in mice. It is unclear if the drug, marketed as Targretin, will have the same effect on humans. Some researchers want to begin testing the drug for its efficacy in treating Alzheimer's patients.

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NEAL CONAN, HOST:

The achievement gap between black and white students has narrowed significantly over the past 50 years. The gulf between rich and poor students, however, has widened dramatically. Several studies suggest that family income serves as a better predictor of school success.

In an op-ed in The Washington Post, Georgetown professor Daniel Byman says U.S. policy focuses too much on removing the dictator and not on filling the void left behind. He says that to help in Syria, the U.S. and its allies should train the rebels and use "tough love to cajole and reward the opposition."

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NEAL CONAN, HOST:

This is TALK OF THE NATION. I'm Neal Conan, in Washington. Last month, Supreme Court Ruth Bader Ginsburg told a television interviewer in Egypt that she would not look to the U.S. Constitution as a model if she were drafting one today.

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JUSTICE RUTH BADER GINSBURG: Why not take advantage of what there is elsewhere in the world? I'm a very strong believer in listening and learning from others.