From NPR News

In his book, Reinventing Discovery: The New Era of Networked Science, Physicist Michael Nielsen discusses why scientists jealously guard their data and are slow to adopt online tools for collaboration. Nielsen talks about why attempts to create science wikipedias have failed.

Discover the secret life of ice--what makes it cloudy or clear, why cracks form on ponds. Science Friday visited Queens ice sculptor Shintaro Okamoto in his studio and spoke with ice researcher Erland Schulson, of Dartmouth University, to find out why ice is an interesting subject for artists and scientists.

Transcript

IRA FLATOW, HOST:

Imagine walking into Jamba Juice for your favorite smoothie fix, and when it's time to pay, instead of pulling out cash or a credit card, you just tap your phone on a reader, and you're ready to go. Better yet, when you tapped your phone to pay it, it also redeems an electronic coupon stored in your phone, so you end up paying even less. Yeah. Well, people in fact can already do this at Jamba Juice using Google Wallet on certain Android phones. You can use it at Macy's, Bloomingdales, Duane Reade.

Reporting inThe Lancet, researchers write that a preliminary study shows embryonic stem cell therapy in two patients with macular degeneration was safe. Results suggest the patients' vision improved slightly. Dr. Robert Lanza, Chief Scientific Officer of Advanced Cell Technology and co-author of the study, discusses the trial.

So how many people have human papillomavirus in their mouths?

Quite a few, say researchers who got more than 5,000 volunteers across the country to spit into a cup and answer detailed questions about their sex lives.

The bottom line: 6.9 percent of people in the U.S. (ages 14 to 69) have oral infections with HPV. Some types of HPV are linked to cancer and genital warts.

Taking an issue he highlighted during his State of the Union address on the road, President Obama this morning told an audience at the University of Michigan that he is "putting colleges on notice" that the era of unabated tuition hikes is over, as The Associated Press reports.

The Defense Department has spent close to $3 billion since 2007 to treat and study traumatic brain injuries and post traumatic stress disorder — the leading injuries suffered by U.S. military personnel in Iraq and Afghanistan. But a federal investigation finds that the department's programs are so disorganized that it's difficult to figure out how the money has been spent.

For more than a decade, Republican presidential candidate Ron Paul has had to deal with questions about why a newsletter he published in the 1980s and '90s included some racist writings. He's said more than once that, while he takes responsibility for what was in the newsletters, he didn't pay enough attention to what was printed, wasn't aware of the racist messages at the time and rejects them.

Somehow 35.5 pounds of cocaine wrapped in a fake diplomatic sack made it to the United Nations' headquarters in New York. The AFP reports that U.N. officials said on Thursday that the cocaine had been shipped from Mexico through DHL, which handles U.N. mail.

This interview was originally broadcast on June 15, 2009.

For someone who has spent the majority of his career making comedies, Woody Allen sees the world — and his lifelong profession — through a surprisingly dark lens.

"Life is a terrible trial, and very harsh and very full of suffering ... [Film] is a different kind of pain. Making a movie is a great distraction from the real agonies of the world," Allen tells Terry Gross.

At the rate they're going, those nutritious-looking sprouts may disappear from sandwiches and salads near you in not too long. And that may be a good thing.

This week, the Beaumont, Tex.-based Jason's Deli chain announced that it would no longer serve fresh sprouts, citing frequent recalls due to bacterial contamination.

Violence is increasing in Syria, with activists reporting multiple clashes in cities. The U.N. Security Council is meeting Friday to discuss a resolution on the conflict there. It's also likely to ask President Bashar Assad to step down.

Good morning!

Our early headlines:

Twitter Announces It Can Now Block Content By Country

Signaling Modest Growth, U.S. GDP Grew At 2.8 Percent In Fourth Quarter

Twitter announced, last night, that it now has the ability to block content by country. This means, for example, that if a Tweet breaks a German law, Twitter can now block it in Germany but leave it up in the rest of the world.

In a blog post, Twitter explained:

The United States economy continued to expand modestly toward the end of 2011. The Commerce Department says it grew at an annual rate of 2.8 percent in the fourth quarter and 1.7 in all of 2011.

This means that the economy has expanded for the last two years, after a 3.5 percent decline in 2009. The economy did slow down in 2011. It grew 3 percent in 2010.

The Commerce Department explains:

Costa Crociere SpA came to an agreement with several consumer groups and is offering 11,000 euros or $14,460 to each of the passengers of the cruise ship that ran aground off the Italian coast, earlier this month.

The Toronto Sun explains the money is for passengers who were uninjured and is to pay for "for items lost and any psychological damages." The cruise line will also refund the cost of the cruise and any travel costs that resulted from the crash.