Earlier Glimpse

DNA sequencing is changing prenatal screening, writes Jane Brody in her New York Times health column. New prenatal tests look at cell-free DNA from the fetus that is floating in the woman's blood and, Brody notes, appear to be accurate and can be performed early in a pregnancy. Currently, the tests mainly look for trisomies, like trisomy 21.

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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.