This Week in PLOS

A PLOS One study of snail genetics has unearthed similarities amongst Cepaea nemoralis snails in the Pyrenees and Ireland suspected of stemming from ancient human sea travel between the locales. A pair of researchers from the University of Nottingham used two mitochondrial markers to classify nearly 900 C. nemoralis snails from populations across Western Europe and the UK into seven mitochondrial lineages.

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The ancestors of the Arizona bark scorpion and other scorpions and spiders underwent whole-genome duplication, KJZZ reports.

A cryptographic approach could help researchers keep genomic data private while researchers analyze it, Scientific American reports.

Andy Page, the former president of 23andMe, has joined a diabetes-management startup, according to CNBC.

In Cell this week: regulatory changes in pancreatic cancer, metabolic shifts in Alzheimer's disease, and more.