Mandarin vs. Dialects: A Linguistic Tapestry

The UN has just released its annual report on how well the fight to slow climate change is going. It finds that efforts to reduce greenhouse-gas emissions are going from bad to worse. We also look at a surprising new lease on life for China’s regional dialects. And while people debate about the merits of Uber, one thing is clear -- it drives people to drink -- or so new research suggests. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/radiooffer

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