Nurith Aizenman

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ROBERT SIEGEL, HOST:

When Elynn Walter walks into a room of officials from global health organizations and governments, this is how she likes to get their attention:

"I'll say, 'OK, everyone stand up and yell the word blood!' or say, 'Half of the people in the world have their period!' "

It's her way of getting people talking about a topic that a lot of people, well, aren't comfortable talking about: menstrual hygiene.

It seems like a no-brainer: Offer kids a reward for showing up at school, and their attendance will shoot up. But a recent study of third-graders in a slum in India suggests that incentive schemes can do more harm than good.

You get a visit by someone you've never met before. You're invited on an all-expense paid trip to your country's biggest city for a two-day meeting on natural gas policy.

Oh, and if you show up you get a free cellphone!

It might sound sketchy. But it's actually an innovative strategy that is being tested by researchers at a Washington, D.C.-based think-tank, the Center for Global Development, or CGD, to help the African nation of Tanzania decide how to spend its expected windfall from new discoveries of natural gas.

Travon Addison is an athletic 25-year-old, with short cropped hair, a wispy beard and tattoos all over his arms. I first spot him with a pack of his buddies in the lobby of Baltimore's New Shiloh Baptist Church. Community leaders are trying to calm them down.

Addison had been arrested in the riot Monday, released two days later, and he's come to the church because he's heard they're holding a summit on the problems that sparked the violence. He's got a lot to say.

Copyright 2018 NPR. To see more, visit http://www.npr.org/.

ROBERT SIEGEL, HOST:

Now, more about the woman who's building the case against those six officers. Marilyn Mosby is 35 years old. She just took the office of chief prosecutor in Baltimore four months ago. NPR's Nurith Aizenman reports.

West Africa is about to receive a hefty infusion of cash. This Friday the World Bank unveiled a major aid package for the three West African countries at the center of this past year's Ebola epidemic.

How often does this happen: You're listening to a news story describing some problem halfway around the world and you say to yourself, "I know how to fix that!" It's not your area of expertise. It's not a place you know. But you are sure that if you went there you could solve the problem.

Michelle Niescierenko is a pediatric emergency physician at Boston Children's Hospital. But for the past five months she has been in Liberia, helping the country's 21 public hospitals get back on their feet after the devastating Ebola outbreak there. She says the challenges they face are shocking.

"Almost all the hospitals that we worked with in Liberia are running on generators," she says. The trouble with generators is that they require fuel.

Domestic violence is never OK. Yet in 29 countries around the world, one-third or more of men say it can be acceptable for a husband to "beat his wife." Perhaps more surprising: In 19 countries, one-third or more of women agree that a husband who beats his wife may be justified, at least some of the time.

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