This Week in PNAS

Researchers from the US, Germany, Australia, and Peru included mitochondrial DNA sequence data in their analysis of pre-Columbian population patterns in Peru. The team sequenced hyper-variable 1 regions in mtDNA from more than 200 ancient individuals from southern Peru. Together with existing mtDNA data, the sequences suggested that at least two large migrations and related cultural shifts occurred in the region.

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The Jackson Laboratory has filed a complaint accusing Nanjing University of breeding and re-selling its mouse models, the Hartford Courant reports.

Oxford researchers are turning to virtual reality to visualize genes and regulatory elements, Phys.org says.

In Science this week: neutrophils rely on microRNA to protect against lung inflammation, and more.

China is moving forward with plans to sequence a million citizens, the Wall Street Journal reports.