Two papers looking at colon cancer biomarkers have been retracted by research team that had been based at Johns Hopkins University School of Medicine, reports Retraction Watch. Papers from that group looking at prostate cancer have already been retracted, the blog adds, and some of the team members have since moved on from Hopkins.

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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.