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What looked like a piece of metal protruding from a piece of rock had tongues wagging. It turns out, it's a piece of shiny rock — a lot like some we see here on Earth.

A worldwide Catholic conversation that effectively stopped when Benedict XVI was elected pope eight years ago has been rekindled by his plan to resign. Issues include celibacy, the role of women in the church, and the spectacular shift in Catholic population to Latin America, Africa and Asia.

The 41-year-old Florida senator will deliver the official Republican response to President Obama's State of the Union address Tuesday night. It's a chance for a party that has fared badly with both young and Hispanic voters to showcase a new stance on immigration.

President Obama's State of the Union address Tuesday night will pick up where his inaugural speech left off. He's expected to bring up the issues of the economy, overhauling immigration, gun control and the budget.

North Korea confirmed on Tuesday that it had successfully conducted a third nuclear test. It's an important step toward North Korea's goal of building a bomb small enough to be fitted on a missile that could reach United States.

Analysts also say North Korea's claim that the device was smaller and lighter than ones it previously tested might be a sign it has moved closer to being able to fit a weapon on to a missile. Leaders around the world are condemning North Korea's actions.

Some U.S. meat producers add an obscure chemical called ractopamine to the feed that they give to their pigs, cattle or turkeys. But Russian safety officials haven't approved it, and they've stopped U.S. meat imports – worth a half-billion-dollars a year – until those imports are ractopamine-free.

Also: A school will be named after Maurice Sendak; poetic parking regulations; and Amish romance novels.

Of the 117 cardinals who will choose the next pope, slightly more than half are from Europe. There are names being floated from elsewhere, but conventional wisdom is that the cardinals will go the conventional route.

In his State of the Union address Tuesday night, the president is expected to lay out some details about the reduction in troop numbers.