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Apple launches its much anticipated version of a smart watch. Dozens of countries are taking part in a simulation exercise testing their capacity to tackle a tsunami. The murder of four Peruvian tribal leaders is focussing new attention on the problem of deforestation in South America. We speak to a friend of one of the murdered men: the outspoken anti-logging activist Edwin Chota. AND the relationship between play and economic success: we speak to a charity that builds play spaces in some of the most deprived cities in the US.

Ben Casselman, Chief Economics writer at the website FiveThirtyEight.com joins us from New York and in Beijing, we're joined by Lijia Zhang, a writer, journalist, social commentator and public speaker.