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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Helix customers can purchase apps that interpret different aspects of their genome, Technology Review reports.

The New York Times reports that a number of companies and research institutes are pursuing gene therapies.

Salmon with shorter telomeres survive to make the trip back to their river homes, New Scientist reports.

In PLOS this week: vaginal microbiome composition, population patterns of Chagas-carrying Rhodnius ecuadoriensis, and more.