Argentina acts to defuse currency crisis

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Argentina is to ease its foreign exchange controls, following the biggest daily fall in the peso for 12 years. Plus a drifting ship full of rats is reportedly heading towards British shores. We talk to the boss of one of the world's largest salvage firms who says there are other vessels out there drifting unmonitored in the world's oceans. And at the World Economic Forum in Davos the BBC's business editor Robert Peston caught up with US Treasury Secretary Jack Lew and asked him about signs that the world is emerging from the long financial crisis.