Talk of the Nation

The Pew Hispanic Center estimates that there are millions of people living in mixed-immigration-status families in the U.S. Immigration attorney Kamal Essaheb and Center for Public Integrity reporter Susan Ferriss discuss the challenges these families face.

In the debate on gun control, self-protection and the protection of others are commonly cited justifications for gun ownership. NPR's Neal Conan talks with guests about what happens when a person draws a gun on another individual.

From Iranian President Mahmoud Ahmadinejad's visit to Cairo, to the ongoing violence in Syria, Rami Khouri, columnist for Beirut's Daily Star recaps developments in the Middle East and reflects on lessons learned two years after the Arab Spring.

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CELESTE HEADLEE, HOST:

This is TALK OF THE NATION. I'm Celeste Headlee.

Civil rights activist Rosa Parks would have been 100 years old today. NPR's Celeste Headlee talks with listeners about the first time they learned about Parks and what she signifies today.

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CELESTE HEADLEE, HOST:

This is TALK OF THE NATION. I'm Celeste Headlee, in Washington. Neal Conan is away. Chemotherapy can be a painful and disruptive experience that can affect almost every aspect of a cancer patient's life. We hear most often about things like nausea and hair loss, of course, but people aren't necessarily prepared to lose, say, the taste of their favorite food, or develop insomnia.

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IRA FLATOW, HOST:

Up next, Flora Lichtman is here with Video Pick of the Week, fresh from being the recent winner of the Cyberscreen Film Festival. Well, congratulations, Flora.

FLORA LICHTMAN, BYLINE: Oh, thank you, Ira.

FLATOW: It was for optical illusion piece.

LICHTMAN: Yes. Step into an optical illusion was the winner. Thank you. But, really, I mean, I'm still stuck on dung beetles.

(LAUGHTER)

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IRA FLATOW, HOST:

Now for a surprising find from the insect world. The dung beetle, that insect known for sculpting little balls of animal feces that they roll around and later feast on. Well, it turns out that these beetles have a built-in cosmic GPS that helps them navigate around. Dung beetles use light - listen to this - use light from the Milky Way to orient themselves at night. It's all in a paper published earlier this month in the journal Current Biology.

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IRA FLATOW, HOST:

This is SCIENCE FRIDAY, I'm Ira Flatow. When you read a news article online, how much attention do you pay to the comments that follow at the bottom? What about how many times the story has been re-tweeted or how many Facebook likes it has? Do you pay attention to those?

Sen. Lindsey Graham (R-SC) told Fox News that Secretary of State Hilary Clinton "got away with murder" for her handling of the attacks on the U.S. consulate in Libya. Ambassador Thomas Pickering, who led the independent investigation into the attacks, talks about the future of diplomatic security.