This Week in PLOS

Researchers from Sweden and Australia looked at methylation shifts in adipose tissue from dozens of men embarking on a six-month exercise regimen — work that they describe in PLOS Genetics. Using array-based approaches, the team assessed methylation patterns across the genome in 31 healthy men — 15 with a family history of diabetes and 16 without — who initially reported low levels of physical activity.

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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.