This Week in PNAS

In the early, online edition of the Proceedings of the National Academy of Sciences, a team from the University of Texas Southwestern Medical Center reports on a family of microRNAs called miR-515 that are found at higher-than-usual levels in placenta samples from women who go on to experience preeclampsia, a form of high blood pressure during pregnancy that lead to maternal or fetal mortality.

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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.