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The Pacific coral atoll of Henderson Island is a World Heritage Site. Being uninhabited, it has become a great location to study evolution and bio-diversity. However, in May 2017, the island hit the headlines for being the most 'contaminated' place of a certain kind. What does it have the highest density of, according to a research study?

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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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