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Hello and welcome to the Intelligence from the Economist.

Today from London, I'm your host Jason Palmer.

Every weekday, we provide a fresh perspective on the events shaping your world.

Across the rich world, you can sense the tension as house prices start to slip or plummet.

But there's one country where upending the balance is particularly dangerous.

We learn about the unusual property market in South Korea.

And if you gather enough data, usually the truth will out.

And that's no less true when listening to popular music.

Our correspondent trolls through three decades of hits to learn what it is that makes a chart topper.

And how that is changing.

First up though.

Today marks two weeks since massive earthquakes hit Turkey and Northern Syria,

turning the region into the site of a colossal humanitarian disaster.

Officially, more than 46,000 people have been killed.

Of those almost 6,000 are in Syria.

But in reality, that number is probably far higher.

...