Talk of the Nation on KCCU

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NEAL CONAN, HOST:

This is TALK OF THE NATION. I'm Neal Conan in Washington.

Transcript

NEAL CONAN, HOST:

This is TALK OF THE NATION. I'm Neal Conan in Washington. Suicide bombers explode themselves in the heart of Damascus; tens of thousands killed in that Syrian civil war and counting; the U.S. ambassador to Libya and four other Americans murdered in an attack in Benghazi on the anniversary of 9/11; in Minneapolis, a gunman kills four people at a local post office before shooting and killing himself; just a few of the recent headlines from a world seemingly afflicted by war and violence.

Reporting in Science, researchers write that mouse stem cells can be transformed not only into egg cells--but into newborn pups. Sean Morrison, a stem cell expert at the University of Texas Southwestern, explains the stem cell's journey, and what it could mean for fertility and assisted reproduction.

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IRA FLATOW, HOST:

This is SCIENCE FRIDAY. I'm Ira Flatow.

UNIDENTIFIED WOMAN: Starting route to Empire State Building: Head northwest on West 43rd Street.

FLATOW: That's the voice of Apple's maps app for iOS 6. She sounds confident enough, but how do you know she'll actually lead you to the correct destination? Because as users all over the world have figured out, Apple's maps and their driving directions have some serious problems. Apple has even apologized for it.

The horn of the Japanese rhinoceros beetle can grow to be two-thirds the length of the rest of its body. And size matters. The beetles battle with their horns to get access to female beetles. Biologists Doug Emlen and Erin McCullough, of The University of Montana, are looking into what regulates the size of this extra-large attribute.