This Week in PNAS

Editor's Note: Some of the articles described below are not yet available at the PNAS site, but they are scheduled to be posted some time this week.

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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.