Talk of the Nation

Former Rutgers student Dharun Ravi could face 10 years in prison and deportation to his native India after being convicted of bias intimidation. Ravi used a webcam to spy on his roommate, Tyler Clementi, having an intimate encounter with another man. Clementi killed himself several days later.

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IRA FLATOW, HOST:

The world's tallest peak. It's so iconic. It's so classic. You'd think we'd have learned everything there is to know about it by now, but you'd be wrong. Scientists still can't even agree on the exact height of the mountain. And what's more, they're not even sure what kind of rocks the mountaintop is made of.

Business and political leaders have repeatedly warned that America's scientists and engineers are in short supply. However, some economists say the numbers indicate the opposite — a glut of high-tech workers. A panel of experts debate whether America's schools produce the scientific workforce needed to compete globally.

Estimated altitude for this flight was about 115,000 feet, says Raul Oaida, 18-years-old. Raul launched the shuttle, along with a video camera and a GPS tracker, by way of a large helium balloon. Flight time was about three hours--the shuttle landing about 150 miles south of where it took off.

Astrophysicist Adam Riess shared the Nobel Prize in Physics in 2011 for his work on distant supernovae, which demonstrated that the universe was not only expanding--but that its expansion was accelerating. Now he's hunting for clues that might explain why, and one of the prime suspects is a mysterious force known as dark energy.

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NEAL CONAN, HOST:

This is TALK OF THE NATION. I'm Neal Conan in Washington. Israelis see Syria convulsed in violence to their north; uncertain relations with a much-changed Egypt to the south; and many fear a conflict with Iran could be just a matter of time. But as if to remind us of the central dispute in the region, Palestinians launched a barrage of rockets from Gaza last week. Israel responded with airstrikes. [POST-BROADCAST CORRECTION: The violence began when Israel assassinated a leader of a militant Palestinian faction in Gaza.]

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NEAL CONAN, HOST:

The Iranian government continues to deny U.N. nuclear inspectors access to a military base where some believe they tested atom bomb parts. But Iran also says it's willing to resume talks with the United States and five other big powers, though skeptics argue Tehran is just playing for time. At a news conference yesterday, President Obama stressed diplomacy but added time for talks is running out.

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NEAL CONAN, HOST:

This is TALK OF THE NATION. I'm Neal Conan, in Washington. More good unemployment numbers today, oil prices tick down, positive news even about the housing market. Yes, many millions are still out of work, banks continue to process foreclosures, overall economic growth remains sluggish. But right now anyway, some sectors are doing better, a few are actually booming.

Gov. Rod Blagojevich is serving a 14-year prison sentence in a Colorado prison. Former Missouri state senator Jeff Smith served a year in federal prison on obstruction of justice charges. He offers sober advice to Blagojevich on what to expect, and what and what not to do behind bars.

Rick Santorum swept the Mississippi and Alabama primaries on Tuesday, leaving Mitt Romney a distant third. Newt Gingrich maintains he'll carry on, and third-place finisher Mitt Romney faces renewed doubts about his ability to win over conservative Republicans, though he's leading the delegate race.