MIT is celebrating the 50th anniversary of the groundbreaking RNA research conducted by biophysicist Alexander Rich. According to the news clip, Rich announced in 1956 in the Journal of the American Chemical Society that single strands of RNA can spontaneously join together to form double-stranded molecules.

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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.