The Nascent blog has a post describing a new text mining technology embedded in Nature.com's blogs that aims to give an emotional context for topics in blog posts. The purpose is to better help the site cluster blog posts together for their "stories" section. Called sentiment analysis, the technology stores metadata on each blog in the form of scores given to different terms depending upon how many positive or negative emotions are associated with it.

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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.