NPR News

Reporting in Science Translational Medicine, researchers write that neural stem cell implants were able to slow the onset of amyotrophic lateral sclerosis (ALS), or Lou Gehrig's disease, in mice. Study author Evan Snyder discusses the stem cells' protective effect, and why human trials may not be far behind.

This was a strange and wonderful year for young adult fiction — but also a confused and divisive one. We learned that 55 percent of young adult fiction was read by adults. Debates raged over what constituted a young adult novel versus an adult novel. Apologetic grown-ups sneaked into the teen section of the bookstore, passing subversive teens pattering into the adult paranormal and literature and mystery shelves.

In the wake of the tragedy in Newtown, Conn., mayors are a key part of the debate over the country's gun laws. Host Michel Martin speaks with two leaders who frequently encounter issues of gun violence and gun ownership; Kansas City, Mo. Mayor Sylvester James and former Cincinnati Mayor Kenneth Blackwell.

The Barbershop guys talk about preventing tragedies like last week's shooting in Newtown, Conn. Also, a sports commentator said Washington Redskins' Robert Griffin isn't black enough. Host Michel Martin talks with culture critic Jimi Izrael, civil rights attorney Arsalan Iftikhar, journalist Michael Skolnik and policy analyst Timothy Johnson.

America's increasingly diverse society is rewriting many of the traditional rules of etiquette. Host Michel Martin gets tips from etiquette experts Harriette Cole, Phillip Galanes, and social commentator Firoozeh Dumas.

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This afternoon, President Obama is set to nominate Massachusetts Senator John Kerry as the nation's next secretary of state. Kerry would replace Hillary Clinton, who's planning to leave that post after four years as the president's globe-trotting emissary. Joining us to talk about the move is NPR White House correspondent Scott Horsley and NPR's diplomatic correspondent Michele Kelemen, who's here in the studio with me.

(We retopped this post at 11:35 a.m. ET.)

Saying that last week's mass shooting at an elementary school in Newtown, Conn., could have been prevented or stopped if there had been armed, trained security personnel on site, officials of the National Rifle Association on Friday called for Congress to appropriate funds to put police officers in every American school.

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STEVE INSKEEP, HOST:

It's MORNING EDITION from NPR News. I'm Steve Inskeep.

DAVID GREENE, HOST:

And I'm David Greene. Action last night in the U.S. House of Representatives suggests just how hard it could be to pass a solution to the tax increases and spending cuts due at the end of the year.

INSKEEP: House Speaker John Boehner has yet to reach a deal with President Obama so he sought to put his own plan before the House last night.

President Obama announced this afternoon that he will nominate Sen. John Kerry, D-Mass., to be his next secretary of state.

Kerry's long experience in the Senate (he was first elected in 1984) and especially in foreign affairs (he chairs the Foreign Relations Committee) mean the senator's "not going to need a lot of on-the-job training," Obama said.

We followed the short appearance at the White House by the president and Kerry and posted some highlights.