Talk of the Nation

Facebook hopes to raise more than $100 billion in its initial public stock offering. In a piece at Slate.com, tech columnist Farhad Manjoo warns that Facebook users can expect to see changes, including lots more ads. But he warns the company must balance profit seeking with the desires of users.

If the Greek economy collapses, economists fear it could lead to a chain reaction that engulfs Spain, Portugal, Italy and other E.U. countries with fragile economies. While some experts argue doomsday scenarios are overblown, others believe the consequences would be chaotic and far-reaching.

Donna Summer, who sang some of the most memorable anthems of the disco era from "Love to Love You Baby" to "Bad Girls," has died after a long battle with cancer. She had a top 40 hit every year from 1976 to 1984, including the song she once told NPR she'd perform till the very end, "Last Dance."

The Census Bureau announced that for the first time non-whites now make up the majority of births in the U.S. The demographic shift raises questions about how this trend will affect policy in the country, particularly with regard to education and social programs.

Truvada is a pill that's already used to treat people with HIV. A daily dose can also significantly reduce the risk of new infection. And a panel recommended the FDA approve an over-the-counter HIV test, OraQuick. Users could test and interpret their results at home in as little as 20 minutes.

Wisconsin Democrats hope to unseat Republican Governor Scott Walker in a recall election. In the Los Angeles Times, Jonathan Zimmerman, a lifelong Democrat, says he is "appalled." The recall, he writes, "epitomizes the petty, loser-take-all vindictiveness of contemporary American politics."

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Blind Chinese activist Chen Guangcheng called into a U.S. congressional hearing from his hospital room in Beijing yesterday to describe violent attacks on his brother and sister-in-law and what he called trumped up homicide charges against his nephew. Chen testified with the help of his friend, Bob Fu, a Christian pastor and fellow activist who took Chen's call on his cellphone and interpreted Chen's remarks for the congressional committee. Bob Fu fled China himself in the 1990s, relocated to Texas and founded a human rights group called ChinaAid.

The push for civil unions recently failed in Colorado, and Governor John Hickenlooper has some ideas about why. Also, former Nevada Governor Bob List talks about the influence of Ron Paul on the Republican Party. And NPR's Political Junkie columnist Ken Rudin rounds up the news.

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It's Tuesday, and time to read from your comments. Many of you heard our conversation with Teresa MacBain and Jerry DeWitt about religious leaders who lose their faith. And while many empathized, some challenged why we aired their story. Greg Calder in Germany wrote: NPR would never have a show about an atheist who found religion. Why give the platform to the atheist if you won't do the same for those that believe? And in a similar vein, Brendan Wolfe in Fairbanks commented: Now that NPR listeners have heard this story about religious leaders losing their faith on ALL THINGS CONSIDERED and TALK OF THE NATION, I'm looking forward to hearing the report on atheists becoming committed Christians. When can I expect it?