This Week in Nature

In this week's Nature, a Harvard University-led team reports that a modified version of the gene-editing technology CRISPR can target and modify single nucleotides without introducing random insertions and deletions into the genome. The approach involves a version of the Cas9 protein that does not cut both strands of DNA, but can still bind to a target sequence.

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In a statement, National Institutes of Health Director Francis Collins says sexual harassment is "morally indefensible" and "unacceptable."

Octopuses might owe their intelligence to their liberal alterations to their genes, Cosmos reports.

Stat News and ProPublica report that African Americans are underrepresented in cancer clinical trials.

In Cell this week: genomic analysis of abdominal aortic aneurysm, effect of probiotics on the microbiome, and more.