This Week in PLoS

Researchers led by Kári Stefánsson say that Icelandic mitochondrial DNA underwent rapid genetic drift in the last 1,100 years since the region was settled. The scientists compared mtDNA from 68 early medieval Icelandic skeletal remains to that from modern Icelanders as well as modern inhabitants of Scotland, Ireland, and Scandinavia.

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Five researchers are to share this year's Albany Medical Center Prize for their work on the CRISPR/Cas9 gene-editing tool, the AP reports.

Stat News reports on how white supremacists cope with surprising genetic ancestry testing results.

In Genome Research this week: sex-biased gene expression evolution in malaria mosquitos, method to find ancient selective sweeps, and more.

Iceland has nearly eliminated Down syndrome from its population, CBS News reports.