Wuhan virus continues China's lockdown

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We update you on the viral outbreak centred on Wuhan in China and how a combination of huge internal migration and neglected public services may have made China's Happiest City not such a cheerful place. What's the best way to work out how well an economy is doing? Some existing survey methods aren't that effective any more - the BBC's Szu Ping Chan investigates how reliable statistics are. And another rollback of the Obama legacy - this time in America's wetlands as President Trump decreases water regulation. When Imran Khan became Prime Minister of Pakistan in 2018, he was faced with a severe economic crisis - the BBC's Mishal Husain speaks with him in Davos about his efforts to revive the Pakistani economy. And how to get more flavour out of the coffee bean? One mathematician thinks he's cracked it. We speak about all this with Alison van Diggelen of freshdialogues.com in Silicon Valley and Shuli Ren of Bloomberg Opinion in Hong Kong. (Image: A hotel employee takes the temperature of a person that just arrived at the premise in Wuhan. Photo by Hector RETAMAL / AFP)