This Week in Nature

Stem-cell researchers led by Andreas Nagy at Mount Sinai Hospital in Toronto and Keisuke Kaji at the University of Edinburgh have bypassed using viral vectors to create iPS cells by inserting pluripotency genes into a "cassette" that also contained the transposon piggyBAC. The two papers appear in the early online edition of Nature.

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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.