Why are the Dutch so tall? BBC News

The Dutch are, on average, the world's tallest people, but it hasn't always been that way.

So what happened? Scientists believe a number of factors are responsible, such as genetics, better diet and medical care.

But now there's another theory. Research from the London School of Tropical Medicine suggests that natural selection may also have something to do with it.

Jane O'Brien went to the Netherlands to find out more.

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