This Week in Nature

In an advance, online publication of Nature this week, researchers report that microRNAs 165 and 166 differentially distribute "target mRNAs in the vascular cylinder determines xylem cell types in a dosage-dependent manner." This, the team writes, is itself mediated by the cell-to-cell movement of the transcription factors Short Root and Scarecrow.

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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.