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Samsung has been on a roll. The hype surrounding its latest smartphone, the Galaxy S4, created a buzz in the tech media — and chatter that Samsung was poised to eat Apple's lunch. But Samsung's long-term position in the smartphone market is more complicated.

It's hard to believe, but seven years ago no one had ever heard of a tweet. Thursday is the anniversary of the first tweet from Twitter co-founder Jack Dorsey. It wasn't profound. He wrote:

Since then the social media company has been an important communication tool in everything from the Arab Spring and Occupy Wall Street, to its use as a megaphone for celebrities. Over the years, its relationship to its free speech principles has changed.

From Trivial To Global Town Hall

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MELISSA BLOCK, HOST:

From NPR News, this is ALL THINGS CONSIDERED. I'm Melissa Block.

ROBERT SIEGEL, HOST:

And I'm Robert Siegel.

Jimmy Fallon is on track to replace Jay Leno as host of The Tonight Show on NBC in 2014, according to unnamed sources in The New York Times and The Hollywood Reporter.

Pope Francis has now been installed and the world's Catholics are looking to see where he will lead the church. But one man in Rome has been trying to make sure the Vatican also deals with the church's troubled past.

David Clohessy, who says he was a victim of sexual abuse at a young age by a Catholic priest, is the director of SNAP, the Survivors Network of those Abused by Priests. By his count, he held 15 news conferences in Rome in the weeks leading up to the conclave at the Vatican.

If you're a vehicle owner and happen to have a car accident in the near future (we hope you don't), it's likely the crash details will be recorded. Automotive "black boxes" are now built into more than 90 percent of new cars, and the government is considering making them mandatory.

Without "a few years" warning, humans currently have no capacity to stop an asteroid on a collision course with the planet, scientists told a Senate panel Wednesday.

"Right now we have no options," said former astronaut Ed Lu. "If you dont know where they are, there's nothing you can do."

The Lions' members share a strong love of classic, Jamaican-inspired reggae. Hailing from different musical generations, the L.A. band's members craft a unique style which blends hip-hop and reggae with electrifying dub rhythms. Although the lineup has changed since The Lions' beginnings, the music has remained explosive and alluring.