This Week in PNAS

In a paper published online in advance in PNAS this week, the University of Texas Southwestern Medical Center's Robert Frost and Eric Olson show that the Let-7 family of miRNAs "regulates glucose metabolism in multiple organs." In a mouse model, Frost and Olson found evidence to suggest "anti-miR-induced Let-7 knockdown as a potential treatment for type 2 diabetes mellitus."

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Polygamy amplified a rare genetic disease in area near Arizona-Utah border, BBC Future reports.

Genetic ancestry testing led one woman to learn that her father and another baby boy had been switched at birth, the Washington Post reports.

Simple de-identification methods can protect information in a database from attackers, a new study suggests.

In Science this week: approach to visualize chromatin structure in nuclei, and more.