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It turns out that the Siberian woolly mammoth wasn't really Siberian. In research published in Current Biology, scientists looked at mitochondrial DNA from 160 mammoth samples from across Eurasia and North America and found that at some point in the past 150,000 years, North American mammoths migrated back to Siberia over the Bering Strait. When the mammoth finally went extinct in Siberia about 10,000 years ago, it was not of Siberian lineage, reports the New York Times.

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Russia says its candidate SARS-CoV-2 vaccine has a very high efficacy rate in an initial analysis of clinical trial data, according to the Financial Times.

Wired reports on a microbial analysis of sketches drawn by Leonardo DaVinci.

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

In Nucleic Acids Research this week: the Aging Atlas database, a database of human metagenome-related metadata, and more.