This Week in PNAS

In a paper published this week in PNAS, University of Edinburgh scientists show that "the majority of S. aureus isolates from broiler chickens are the descendants of a single human-to-poultry host jump," which they believe happened about 38 years ago, by a subtype of a lineage from Poland. This ST5 clade has adapted to its new host through acquiring new mobile elements and inactivating several important human disease genes, they say.

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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.