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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Berkeley researchers have engineered yeast to make the molecule behind the hoppy taste of beer, Quartz reports.

King's College London researchers examine the influence of school type and genetics on academic achievement.

FiveThirtyEight writes that most who take a direct-to-consumer BRCA1/2 genetic test won't learn much from it.

In Science this week: early life experience influence somatic variation in the genome, and more.