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An environmental researcher argues the heavy phosphorus footprint of meat is good reason to eat less meat, given that phosphorus is a finite resource and critical for food security. But not everyone thinks we should be worried.

For a fee, Silent Circle erases messages from both the receiver and the sender's phones. The app's creators got the idea after hearing an all-too-familiar story: A friend of theirs inadvertently read a text meant for someone else.

Korean-American pastor Peter Chin leads an African American church, and lives in a predominately black neighborhood. It hasn't always been easy, but in this holiday rebroadcast, Chin tells host Michel Martin how he's worked through diversity issues with his family, his congregation and himself.

The Scottish singer-songwriter performed at the 2012 Summer Olympics, and her debut album Our Version of Events sold more copies than any other in the U.K last year. During an encore presentation, Emeli Sande performs for host Michel Martin and chats about her whirlwind success.

The uproar over what critics call "pink slime" in some ground beef refocused attention on what's in the food we eat. Most packaged foods contain at least one item you wouldn't recognize. But many food experts caution that just because you don't know an ingredient doesn't mean you shouldn't eat it. This segment was originally broadcast on April 11, 2012.

The federal government once considered whistle-blowers a nuisance, or worse. But over the past few years, that attitude has slowly started to change. More agencies have been reaching out for tips about fraud and abuse, even if digging through the stacks of complaints can present a challenge.

Zuoxiao Zuzhou is a controversial rock musician: He's hardly ever in tune. But in China he's become the ersatz voice of a generation, sometimes working alongside his close friend Ai Weiwei.

The Chinese military unit allegedly behind cyberattacks on U.S. firms works out of a nondescript office tower in a Shanghai neighborhood that's modern, but considered a little bland.

Many employees lost their jobs in recent years after posting negative comments about work on social media sites. A recent decision by the National Labor Relations Board may give workers more freedom to talk and complain about work on social media.

The Republican strategist has made enemies out of the conservative groups after announcing he would take on vulnerable GOP candidates.