Friends and Foes

The human body is teeming with microorganisms. "John Donne said 'no man is an island,' and Jefferson Airplane said 'He’s a peninsula,' but it now looks like he's actually a metropolis," writes Richard Conniff at Smithsonian magazine.

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Researchers find that historical factors influence which genes are the most highly studied, the Atlantic reports.

The US National Science Foundation's new sexual harassment policy is to go into effect next month, according to Nature News.

Researchers report using genotyping to tie together illegal ivory shipments and trace them back to a handful of cartels, the New York Times reports.

In Nature this week: genomic ancestry analysis of Sardinians, current noncoding mutations in colorectal cancer, and more.