Nurith Aizenman

It's 11 at night in a busy commercial section of Chennai, a city of nearly 5 million in Southern India. All around me people are sleeping in the open air. Men are curled up in the back of rickshaw wagons. Entire families camp out in shelters made of cardboard and tarp. A woman in a blue sari smiles and waves for me to come over.

She tells me her name is Anjalai — like some in this part of India, she goes by only one name — and says she's got the most basic setup: a woven blue mat laid out on a patch of dirt by the side of the street.

Blame it on France.

China is the most troubling example of a government using national policy to engineer the size of its population with its decades-long one-child policy.

But the idea has its roots in late 19th century France. And it was expanded on in the mid-20th century by scholars in the United States, who helped create the environment of overpopulation fear in which Chinese leaders adopted their draconian approach.

Mahendra Sharma is director of an unusual charity: It's effectively a boarding school for child brides. It's called the Veerni Institute and it provides free room, board, health care and schooling to about 70 girls from villages surrounding the northern city of Jodhpur. Child marriage is a long-standing practice in these villages, and about 30 of the students at Veerni are already married. They may be as young as 9 or 10 when they are married, but normally they aren't sent to live with their husbands until around age 15.

Nimmu is 15 years old. She comes from a rural village in northern India, and she's been married since she was 10.

This year she's trying to change her fate.

In Nimmu's village, when you're married young, you don't move in with your husband right away. You stay with your own parents until around your 15th birthday. That's when they send you to your in-laws.

From what Nimmu has seen, you basically lose your freedom at that point. The in-laws assign whatever chores they see fit. And you're expected to follow their orders without question or complaint.

If you fall seriously ill in Poland you can count on good care at a private hospital but should probably steer clear of the public ones.

In Botswana, an otherwise survivable road accident could prove deadly owing to lack of good care. But in some areas of neighboring Namibia there's a decent chance emergency medical personnel can stabilize you.

And if you have a heart attack, your ticker should be in good hands in Sao Paulo.

It's an open secret among journalists: When reporting a major news story in an unfamiliar country, it's great to have a "fixer."

That's the catch-all term we use for our local guides to language and logistics — the people who can translate documents, interpret during interviews and generally help you figure out the most efficient and the safest way to get from one location to the next.

In 2000 the world's leaders agreed on an ambitious plan to drastically reduce global poverty by 2015. Called the Millennium Development Goals, the targets spurred an unprecedented aid effort that brought lifesaving medicines and vaccines to millions of people and helped slash the share of people in the developing world who live in extreme poverty from 47 percent in 1990 to 14 percent today.

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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.

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