This Week in PNAS

In a paper appearing in this week's PNAS Early Edition, researchers at Duke University, China's Tsingua University, and at Sage Bionetworks in Seattle identify "type II cells, Clara cells in the terminal bronchioles, and putative bronchoalveolar stem cells as cells of origin for K-Ras-induced lung hyperplasia." The team also reports that of these, "only type II cells appear to progress to adenocarcinoma."

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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.