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The Chelyabinsk meteor was part of a group of Earth-crossing objects known as Apollo asteroids, scientists believe.

But the Federal Reserve chairman warns Congress that the "sharp, front-loaded spending cuts" that would come with the so-called sequester could hurt the economy. He recommends "policies that reduce the federal deficit more gradually in the near term but more substantially in the longer run."

Civilization cannot live on anchovies alone. The ancient Norte Chico people of Peru were long thought to have built a complex society in South America while dining on a diet based on the tiny fish. But archaeologists now say they ate the food that fueled empires throughout the hemisphere — corn.

On his first foreign trip as Secretary of State, Kerry defended America's tradition of civil liberties. He said our tolerance for the airing of controversial opinions is a virtue.

Rates for female applicants could be up to 40 percent higher under the new pricing policy from Genworth Financial, the country's largest long-term care insurer. The company says women account for two out of every three dollars spent on claims.

A two term Republican senator from Nebraska, Hagel will become the first Vietnam veteran to head the U.S. Department of Defense.

The death of Trayvon Martin spurred new conversations about race in America. It was also a turning point for The Race Project, where NPR's Michele Norris collects six-word reflections on race, culture and identity. Norris discusses the poignant conversations she's had since Martin's death.

A government agency in Quebec, Canada, has come under intense criticism after attempting to get pasta stricken from a restaurant's menu. The move had nothing to do with the food: Officials said Italian words such as pasta, calamari, and antipasto should be replaced with French words.

President Obama has begun his second term with great momentum, but history warns that he will be challenged to sustain himself by forces all around — and within — him.

Is the operating room staff Facebooking when they should be monitoring vital signs? The nurse anestheticists say that's a potential patient safety problem.