The uproar over what critics call "pink slime" in some ground beef refocused attention on what's in the food we eat. Most packaged foods contain at least one item you wouldn't recognize. But many food experts caution that just because you don't know an ingredient doesn't mean you shouldn't eat it.

The April deadline comes around at about the same time every year. Still, with just a few days left before taxes are due, many people continue to put off filing.

The boxes of receipts, stacks of W-2s and 1099s are daunting enough. Add in row after row of fill-in boxes on the 1040, and it's no wonder so many people procrastinate.

NPR's Neal Conan reads from listener comments on past Talk of the Nation shows, including the emergence of robots across the country, the racial history of Sanford, Florida, and the new balance of power in retail.

It's time to kill the penny. That's what Daniel Akst argues in a recent op-ed on Newsday.com. "Pennies," he writes, "are a pain in the neck, only more so because they're worthless." While the penny isn't quite worthless, it does cost more than two cents to create each one.

Rick Santorum ended his presidential campaign Tuesday. It clears the way for Mitt Romney to capture the nomination, though many conservatives have yet to rally around the former Massachusetts governor. The Romney campaign now shifts into the general campaign, with a focus on President Obama.

The Federal Reserve's policymakers seem to be reluctant to consider any more efforts to inject a monetary stimulus into the U.S. economy — but that doesn't mean you should expect the central bank to raise interest rates any time soon.

Nadine Gordimer's trademark characters live for politics, the Struggle. You get the feeling they would be sick to their collective stomachs if they ever even tried to bite into a gourmet cupcake.

In Bahrain, demonstrators are demanding the release of imprisoned activist Abdulhadi al-Khawaja. He has been on hunger strike for more than two months and his family now fears for his health. Guest host Viviana Hurtado speaks with his daughter, Zainab al-Khawaja and Middle East expert, Joshua Landis.

Transcript

VIVIANA HURTADO, HOST:

This is TELL ME MORE, from NPR News. I'm Viviana Hurtado. Michel Martin is away. She's visiting Syracuse University and member station WRVO is Oswego, New York. Still to come, we take a look at some of the political upheaval in the Middle East. As another deadline has come and gone, the violence continues in Syria. More on that in a few minutes.

Carole King initially found it extremely difficult to navigate the social hierarchies of high school. The Grammy Award-winning songwriter was a few years younger than her fellow classmates and was often dismissed as being "cute."

"And it was like, no, I don't want to be cute, I want to be beautiful and smart," she tells Fresh Air's Terry Gross. "And that wasn't happening, and then I connected through music. So music became a way of identifying my particular niche. How lucky for me."