About That Finding…

Medical studies that show large effects often don't hold up under further scrutiny, a new paper published in the Journal of the American Medical Association says. Stanford University's John Ioannidis and his colleagues analyzed clinical trial data from the Cochrane Database of Systematic Reviews and found that "when additional evidence is obtained, most of the very large treatment effects become much smaller and many lose their nominal significance," the authors write.

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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.