This Week in Nature

Because of how "easy" induced pluripotent stem (iPS) cells are to create in the lab, many researchers are using these instead of embryonic stem cells in their studies. In this news feature, David Cyranoski separates fact from fiction about these cells.

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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.