Efforts to uncover the mechanism through which microRNAs regulate gene expression have thus far resulted in a number of different, and sometimes conflicting, hypotheses.

But according to one researcher, the challenge of pinning down precisely how and to what extent these small RNAs act may be due in part to the type of cellular systems in which the experiments are conducted.

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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.