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This Week in Science

A group of European researchers publish the discovery of a gene that is likely to have contributed to the physical expansion of the human neocortex — a key event in primate evolution. Known as ARHGAP11B, the gene is found in modern humans, Neanderthals, and Denisovans, but is not present in mice. It drives the proliferation of neural progenitor cells that build the brain's neocortex, which is involved in sensory perception, motor commands, conscious thought, and language.

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Bloomberg reports that the DNA-for-cash deal reported in Kentucky might be a more widespread scam.

St. Jude Children's Research Hospital scientists have treated infants with X-linked severe combined immunodeficiency using gene therapy in an early phase study.

St. Louis Public Radio reports that some African Americans are turning to DNA ancestry testing to help guide genealogical searches.

In Nature this week: a genomic analysis of the snailfish Pseudoliparis swirei, ancient DNA analysis gives insight into the introduction of farming to England, and more.