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How much, if any, of the shocking sights and sounds should newsrooms report when two people are murdered on live television and the video whips around the world on the Web?

Alison Parker and Adam Ward, two local TV journalists, were gunned down while on the air Wednesday. They were near Roanoke, Va., interviewing local Chamber of Commerce official Vicki Gardner about tourism. Gardner was seriously injured.

You need some water. You open the faucet. And you wait. And wait.

You twiddle your thumbs. You wait for the first drop to come out of the tap so you can get water for drinking, cooking and cleaning. You wait for hours so that when the water comes, you're ready.

A lot of the time, nothing comes out.

That's the way water works — or, rather, doesn't work — in many parts of the world.

But in India, a group of young entrepreneurs based in Bangalore have figured out how to let people know when there's water on its way. And it's as simple as sending a text message.

One of history's greatest engineering feats is one you rarely hear of. It's the Inca Road, parts of which still exist today across much of South America.

Back in the day — more than 500 years ago — commoners like me wouldn't have been able to walk on the Inca Road, known as Qhapaq Ñan in the Quechua language spoken by the Inca, without official permission.

Donald Trump's Republican presidential campaign continues to lead in the polls, and this week Trump hired Sam Clovis to be his national campaign co-chairman. A week ago, Clovis worked for Republican rival Rick Perry. Clovis, a former radio talk show host and college professor, is an Iowan who has run for state treasurer and the U.S. Senate there. He Talked to NPR's Scott Simon from Sioux City, Iowa.

To hear the full conversation, click the audio link above.


Interview Highlights

On why he left Perry to work for Trump

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