This Week in PLOS

In PLOS Genetics, researchers from the US, the UK, and Yemen used new and existing genome-wide SNP profiles for individuals in Yemen and other regions in the Horn of Africa to consider the possibility that there were historical migrations back to Africa. Indeed, their analyses indicated that individuals in the Horn of Africa tend to have both African and non-African ancestry that is distinct from present-day non-African populations in the region.

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The UK's Human Fertility and Embryology Authority calls for consumer genetic testing companies to warn customers that testing could uncover family secrets, according to the Guardian.

Researchers have transplanted edited cells into mice that appear to combat cocaine addiction, New Scientist reports.

The New York Times reports that United Nations delegates have been discussing how to govern the genetic resources of the deep sea.

In PNAS this week: analysis of proteolytic enzymes secreted by circulating tumor cells, phylogenetic study of Fv1 evolution, and more.