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New data collected from the European Space Agency's Planck telescope shows that the first starlight in the universe occurred about 560 million years after the Big Bang.

Pope Francis has declared slain Archbishop Oscar Romero a martyr. Previous popes declined to do so, possibly because of Romero's role in liberation theology.

Food and Drug Administration Commissioner Margaret Hamburg says she'll leave the job at the end of March after six years in the spotlight and controversies over Plan B emergency contraception.

Hernando de Soto wanted to figure out why his country, Peru, was stuck in poverty. His answer transformed poor countries around the world.

Robert Siegel talks with former Sen. Bob Kerrey about the call for the release of withheld pages from the Congressional Joint Inquiry into intelligence activities leading up to the Sept. 11 attacks.

Hackers gained access to records of 80 million Anthem customers and employees, the health insurance giant says. But how can the seemingly endless mega-hacks be prevented?

The National Transportation Safety Board found selfies to blame for a tragic private plane crash in Colorado last year. Audie Cornish talks to journalist David Yanofsky about tech in the cockpit.

A televised statement said the group was forming a presidential council that would run the country. It called the takeover "a new era that will take Yemen to safe shores."

Lawmakers also introduced a bill to strengthen laws protecting farm animals used in research. Both moves come out of a New York Times investigation of animal suffering at a federal research center.

The Nightly News anchor apologized this week for claims he was on a helicopter that came under fire in Iraq in 2003. Doubts have also been raised about his reporting during Hurricane Katrina.