One of the most talked about personalities on the Republican presidential campaign trail — Callista Gingrich — rarely says a word.

That changed at the Conservative Political Action Committee earlier this month when she spent three minutes introducing her husband. Politico quipped it was the "longest most people have ever heard her speak."

In this presidential campaign, as in the past, the candidates' spouses play a very particular role.

Callista's Hair

In a victory for the White House, the Republican-controlled House of Representatives passed an extension of the payroll tax cut on Friday after weeks of refusal. Host Mary Louise Kelly speaks with James Fallows of The Atlantic about the political reasoning behind the vote.

The market for children's books is huge: Consumers buy $3.1 billion children's books annually. Now, with e-books and apps taking off, there are new opportunities to turn traditional story books into interactive experiences. Guest host Mary Louise Kelly talks with Dan Poynter, consultant and publisher at Para Publishing, and Roxie Munro, an author and illustrator of more than 30 children's books, about where children's books are headed.

"Loose lips sink ships." "Only you can prevent forest fires." "A mind is a terrible thing to waste." "Take a bite out of crime." Sound familiar?

Those tag lines are just a few of the many ads created by the Ad Council, a nonprofit organization that was founded in the 1940s by the leaders of the advertising industry and President Franklin Roosevelt.

What's the record for squeezing open the most ketchup packets in 30 seconds? Seven. The record for the most people simultaneously flossing with the same piece of dental floss? 428.

These records are nowhere to be found in the Guinness World Records book, but rather on the website RecordSetter, where everyone can be a world champion.

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The best bobsled racers in the world are in Lake Placid, New York this weekend, competing in the World Championships. There's big drama this year for the American team. After capturing a historic gold medal two years ago at the winter Olympic Games in Vancouver, the U.S. has struggled, and lost ground to the Europeans. As North Country Public Radio's Brian Mann reports, American sledders hope to prove on their home track that they can still compete.

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The Greek economy continues to suffer. It's been another painful week for that country starting Sunday when thousands of people demonstrated outside of parliament, and rioters torched buildings in Athens. Greek lawmakers passed harsh new austerity measures despite those protests, and still, Greece's European partners refused to approve the new bailout that the Greeks need to avoid default. NPR's Eric Westervelt reports what EU finance ministers will be considering when they meet again on Monday.

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It's the beginning of the beginning of baseball season, and two major thumpers have jumped leagues. Plus, basketball makes it to a midpoint, and suddenly you have to ask: Who's really the best team in Los Angeles? Host Scott Simon talks with ESPN's Howard Bryant about the sports of the week.

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