This Week in PNAS

In the early, online edition of the Proceedings of the National Academy of Sciences, an international team led by investigators in the US present findings from a population sequencing study of group A Streptococcus strain belonging to the Emm protein 1 serotype, commonly dubbed "flesh-eating bacteria." By sequencing the genomes of more than 3,600 of these "M1" strains, the researchers retraced the evolution and spread of epidemic group A Streptococcus.

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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.