This Week in Science

In this week's Science, a team led by Stanford University researchers report the results of a study of the fine-scale patterns of genome evolution in Mexico, showing how that the genetics of country's people has been influenced by population dynamics of ancient Native Americans who lived there prior to European colonization. The findings show distinct genetic makeups of these ancient groups and suggest that many were highly isolated.

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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.