SciLink's Tree of Science, which creates a sort of genealogy of scientists who have worked together, might be the way to find biology's equivalent of an Erdos number, blogs The Daily Transcript's Alex Palazzo. "In any case to figure out the biology equivalent we would need some sort of repository, or even better some navigational network that lets you explore any possible connection. And now we have the perfect application," writes Palazzo.

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Publication of He Jiankui's work on gene-edited infants would raise ethical concerns for journals, Wired and others report.

The New York Times reports that evidence linking trauma in one generation to epigenetic effects that influence subsequent generations may be overstated.

ScienceInsider reports that US National Institutes of Health researchers were told in the fall they could not obtain new human fetal tissue.

In PNAS this week: skin pigmentation evolution among KhoeSan, biomarkers for dengue virus progression, and more.