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Mazda, the Japanese automobile manufacturer, recently recalled over fifty thousand cars from its 2009-10 Mazda 6 model. The company found that certain (natural) intrusions in a vent line could eventually cause cracks in the fuel tank. As mitigation, the company is working on ways to prevent such intrusions.

What kind of intrusions, commonly seen in houses and removed by simple cleaning, was at fault?

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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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