This Week in Nature

Researchers at the University of Pennsylvania show in Nature this week that miR-34 "regulates age-associated events and long-term brain integrity in Drosophila." In its analysis, the team uncovered evidence that "miRNA-dependent pathways may have an impact on adult-onset, age-associated events by silencing developmental genes that later have a deleterious influence on adult life cycle and disease." The Penn team adds that miR-34 may be important in those processes.

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Labs in the US and South Korea are hoping to bring the woolly mammoth back from beyond extinction, Newsweek writes.

Geneticist Adam Rutherford speaks with National Geographic about paleogenetics, race, and more.

Researchers link genetic links between education and smoking and longevity.

In PNAS this week: influence of gene environment interactions on polygenic traits, epigenetic features affecting fruit fly foraging, and more.