Within the Bounds

A paper appearing in Gut earlier this week reports that exercise can influence the gut microbiome, though others in the field argue that these findings may be correlation rather than causation.

In the study, researchers from University College Cork and elsewhere compared the gut microbiomes of professional rugby players and male controls of similar age and physical size from similar areas.

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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.