Bacteriophages found in the mucus of a variety of organisms appear to be helping to fend off bacterial invasions of the host, a new study in the Proceedings of the National Academy of Sciences reports. Researchers led by Forest Rohwer at San Diego State University examined how phages adhere to the mucus and infect bacteria there.

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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.