Pizza chefs from around the world are gathered to compete in events like: largest dough stretch, fastest pizza-box folding and freestyle acrobatic dough-tossing.

(As news comes in from Afghanistan about the killings of 16 civilians, allegedly by a U.S. soldier, we'll update this post.)

There are fears that the killing of 16 Afghan civilians on Sunday, reportedly by a U.S. Army staff sergeant who gunned down the men, women and children in cold blood, will inflame the people of that nation.

Alabama and Mississippi will play an unaccustomed high profile role Tuesday as each candidate for the Republican presidential nomination looks to voters in those states to give his candidacy a boost towards inevitability, if you're Mitt Romney, or just keep their candidacies alive if you're Rick Santorum or Newt Gingrich.

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Here's one thing that many people mean when they say Washington is broken. They may mean that politicians from different parties seem unable or totally unwilling to compromise, and many voters hate that. And yet many voters also hate it if politicians from their own party should compromise with the other side. That could be considered giving in. NPR's science correspondent Shankar Vedantam joins us regularly to talk about social science research, and he's found some that relates to this political problem. Hi, Shankar.

What is remarkable is that those who bought bonds will get a tiny rate of return. Renee Montagne talks to David Wessel, economics editor of The Wall Street Journal, about what the results mean, who's buying Treasuries and how the borrowed funds are being spent.

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NPR's business news starts with trade moves against China.

Mississippi and Alabama hold Republican primaries Tuesday. Former Massachusetts Governor Mitt Romney has campaigned lightly in the two states. But former Pennsylvania Senator Rick Santorum and former House Speaker have both campaigned aggressively there.

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When an American soldier reportedly walked through two villages in southern Afghanistan and methodically killed 16 civilians, including children, it caused an uproar from Kabul to Washington, D.C. Now, let's get a view from where the killings happened - Kandahar. I first met Ehsan Ullah two years ago when I reported on a Canadian-funded girls' school that he runs in that city.

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We're following news this morning of more killings in the Syrian city of Homs. That's the city where rebel neighborhoods came under artillery fire for weeks and where two Western journalists were killed. Rebels later retreated, but residents and activists say pro-government militias have massacred dozens of civilians, mainly women and children. NPR's Kelly McEvers is following this story from Beirut.

And, Kelly, what evidence you have?