This Week in PNAS

In the early, online version of the Proceedings of the National Academy of Sciences, researchers from the University of Utah and the MD Anderson Cancer Center explore the early history of ancient hominins using a new statistical approach for inferring admixture based on allele sharing patterns between samples.

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23andMe's Anne Wojcicki ponders DNA and what it means to be human in a New York Times essay.

A new estimate places the last universal common ancestor to life on Earth as living 3.9 billion years ago, Inverse reports.

In PNAS this week: retinitis pigmentosa gene therapy, role of microbiome in growth stunting, and more.

Bloomberg reports that researchers and drug companies are modeling anti-obesity treatments after the rare genetic condition essential fructosuria.