This Week in PNAS

In the early, online edition of the Proceedings of the National Academy of Sciences, researchers from the University of Washington and elsewhere present findings from an effort to trace the evolution of mutualism between two microbes: the sulfate-reducing bacteria Desulfovibrio vulgaris and the hydrogenotrophic methanogen archaea Methanococcus maripaludis.

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The New York Times and ProPublica look into the close relationship between a startup and Memorial Sloan Kettering Cancer Center.

Yahoo News reports millions of dollars are being transferred from NIH, CDC, and other programs to pay for the housing of detained undocumented immigrant children.

In Science this week: in vitro generation of human reproductive cells, and more.

Researchers gave a handful of octopuses MDMA to find that they too act more social on the drug, Gizmodo reports.