This Week in PNAS

In the early online edition of the Proceedings of the National Academy of Sciences, Harvard University and Genia Technologies' George Church leads a team presenting a single-molecule sequencing strategy built around a polymerase enzyme and alpha-hemolysin-based nanopore inserted into a lipid bilayer.

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The apple has traveled westward and eastward along the Silk Road, according to a new genetic analysis.

In Nature this week: GWAS data used to reposition drugs for psychiatric use, and more.

Genetic disease risk information doesn't always spur people to make healthy lifestyle changes, according to the Associated Press.

A University of California, San Diego-led team has used liquid biopsies to uncover possible treatments for patients with cancers of unknown primary.