Shankar Vedantam

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Eating in a healthy way can be time-consuming or expensive. It's hard, but researchers have a new way to get people to do just that. Steve Inskeep got the details from NPR social science correspondent Shankar Vedantam.

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So what happens now now that "Mad Men" is over? This is a real question that researchers have studied, and NPR's social science correspondent Shankar Vedantam is here to tell us about it. Hi, Shankar.

SHANKAR VEDANTAM, BYLINE: Hi, Steve.

Let's say you're a young person, around 30 years old. And you're the kind of person who likes to take risks. So maybe you're taking risks in your sexual relationships. You're not practicing safe sex.

What would make you change your behavior?

That's a question that's long been pondered by public health officials. And now new research from a World Bank-funded team in Lesotho, a tiny country in southern Africa, has produced a surprising answer.

Lottery tickets!

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