The Office of Extramural Research at the US National Institutes of Health has allowed multiple investigators on grant applications since 2007 "to promote team science and multidisciplinary approaches to biomedical research," says the office's Extramural Nexus publication. Though a request for multiple principal investigators was only allowed on new or renewal applications. The policy has now been revised to allow changes mid-award.

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Two researchers have found that behavioral genetic defenses in criminal cases don't tend to affect outcomes, according to Popular Science.

Researchers report that while host genetics influence the oral microbiome, they don't appear to affect cavity-causing microbes, the Economist says.

Pandas' gut microbiomes change as what they eat changes with the seasons, writes Discover's Inkfish blog.

In PLOS this week: comparative genomic study of malaria-linked macaque parasite, search for apple root reference genes, and more.