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How can growth in the world's largest economy be a threat to world growth? That's what the emerging economies at the G20 conference are claiming.

The US has said that as its economic momentum gathers pace it'll begin to cut back on the flow of quantitative easing dollars its pumps into the economy. Lots of those dollars have ended up invested in emerging economies. So what happens when they are gone?

We'll be getting to the bottom of the debate.

Plus the incredible story of how the toy giant Lego managed to come back from the brink and rebuild itself. And we have the first instalment of Lucy Kellaway's eye-opening history of the office.