And Four

In Nature this week, Harvard Medical School researchers published a study showing that there may have been three migratory waves from Siberia to the Americas thousands of years ago, instead of one as was originally thought — a large one before 13,000 years ago, followed by two smaller ones.

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The London School of Economics' Daniele Fanelli argues at the Proceedings of the National Academy of Sciences that the reproducibility crisis in science isn't as dire as some say.

A team of researchers in Portugal has examined the genomic basis for racing pigeons' athleticism and navigational skills, finding it's likely polygenic.

Wired reports that diagnostic firms continue to seek, post-Theranos, the ability to diagnose diseases from small amounts of blood.

In Science this week: analysis of DNA from ancient North Africans, and more.