This is the short edition of Morales.

First broadcast on the BBC World Service.

Thank you for downloading from the BBC.

The details of our complete range of podcasts and our terms of use

go to BBCWorldService.com slash podcasts.

Hello, this is Morales on the BBC World Service

and I'm Ruth Alexander

and I'm joined today by Charlotte Donald

and Charlotte, you're with me because you've seen a number in the press

that you just think is a bit strange.

Hello Ruth, yes.

The opening paragraph of an article in The New York Times

said about one third of American girls become pregnant as teenagers.

And my first instinct was that it seemed to be a staggeringly high amount

and that's why I wanted you, my wonderful colleagues at Morales,

to find out whether it's true.

Charlotte, for you, anything.

So I've looked at this opinion piece in The New York Times,

written by Nicholas Christoph

and hopefully he did link to his source.

So that one in three figure you mentioned,

it was from a nonprofit organisation in the US

...