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Presidential debate No. 2 is in the books, and the consensus is that — unlike debate No. 1 — President Obama came prepared for battle. For all the talk about "binders full of women," and what was said when after the events in Benghazi, Libya, Obama and Mitt Romney both made their cases. Now, they prepare for the third and final debate on Monday. We also bid farewell to former Pennsylvania Sen. Arlen Specter.

Join NPR's Ron Elving and Ken Rudin for the latest political roundup.

"How long can this situation continue? I mean in Bosnia, now we have Ban Ki-moon [the UN secretary general] apologizing 20 years after. Who will apologise for Syria in 20 years' time? How can we stay idle?"

This interview was originally broadcast on Feb. 1, 2012. How to Be Black will be released in paperback on Oct. 30.

It's no coincidence that Baratunde Thurston's new memoir and satirical self-help book How to Be Black was slated for release on the first day of Black History Month.

A NASA spacecraft captured the clearest recording yet of what space sounds like inside Earth's radiation belts. Craig Kletzing, a professor of physics and astronomy at the University of Iowa, explains what causes these eerie chirping noises, and what we can learn from them.

Earlier this year, Twitter announced a new device and a policy of weeding out and removing offensive content from its site if a foreign government requested it.

Thursday, the company tweeted that it's done so for the first time — blocking a neo-Nazi group's account in Germany. Today, Twitter withheld another account — this one in Britain, belonging to a right-wing member of the European Parliament who tweeted support for discrimination against gays. Government officials are investigating both cases.

It's not just nutritionists who have a problem with sugar these days, so does organized labor. The AFL-CIO is calling for a boycott of one the country's biggest sugar producers, the American Crystal Sugar Company, based in Moorhead, Minn.

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Pablo Helguera is a New York-based artist working with sculpture, drawing, photography and performance. You can see more of his work at Artworld Salon and on his own site.

During a televised debate Thursday on Chicago's WTTW, Rep. Joe Walsh (R-Ill.) reiterated his opposition to abortion in any circumstance. It's similar to the Republican Party's national platform, which doesn't have any exceptions for abortion in the case of rape or incest. Walsh is taking it a step further — banning abortion to save the life of the mother.