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This is an image from the opening minutes of the first semi-final at the recent Madrid Open, between Rafael Nadal and Roger Federer. Why has Rafael Nadal got a black ribbon pinned to his chest?

Image: and Getty Images

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In Jan 2017, Finland became the first country in Europe to officially experiment with this socio-economic concept. Similar experiments are scheduled for many Dutch cities and the Canadian city of Ontario in 2017. In the case of Finland, the figure is 560 Euros a month. What concept?

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