Nigeria’s currency has seen a big drop in value over the last few months. The BBC’s West Africa correspondent, Mayeni Jones, helps us find out why. We also take a wider look at currency in general with our North America Business Correspondent, Erin Delmore. Why do some countries see such big fluctuations? And how on earth do you manage a currency successfully? Hannah gets tested to see if she could make it as the head of a country’s bank.

Plus Liverpool footballer Luis Diaz’s parents were abducted at the weekend. The BBC’s Mimi Swaby talks about Columbia’s kidnapping problem.

Email: whatintheworld@bbc.co.uk WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart with Alex Rhodes Producers: Emily Horler Editor: Verity Wilde and Simon Peeks

More money, more problems: How do currencies work? 15:25 Share

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More money, more problems: How do currencies work?