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In the early, online issue of PNAS this week, Canadian and American researchers report that turkeys were domesticated at least twice in North America. Based on their analyses of ancient mitochondrial DNA from 149 turkey bones and dozens of dung samples from archaeological sites in the US combined with comparisons of modern samples and GenBank data, the team found that a now extinct domesticated turkey sub-species once existed in the American southwest.

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A new survey explores coronavirus vaccine hesitancy among Black and Latino individuals, the Washington Post reports.

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