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Tornado leaves five dead in Iowa

A tornado that ripped through the midwestern US state of Iowa killed five people and left dozens injured, officials said, with homes smashed to pieces and cars thrown through the air.

Finland's wizards making food out of thin air

At a factory in Finland, the "farmers of the future" are making a new food protein by feeding a microbe air and electricity, proving that protein can be produced without traditional agriculture.

A diaspora-based model of human migration

How do migrants choose their destinations? Existing models, known as "gravity models," use population size and travel distance as explanatory variables—and often fail, especially at the neighborhood scale. Many migrants ...

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