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NASA's MESSENGER spacecraft was launched in 2004 to study a planet, which it did so until crashing into the planet in Apr 2015. Which planet did it study, hinted by its name?

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This day last year: Q.1308

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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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