This Week in PNAS

In PNAS this week, researchers from California report their approach to imaging glycans to enable visualization in the enveloping layer during the early stages of zebrafish embryogenesis. The researchers microinjected the embryos with azidosugars at the one-cell stage and detected the metabolically labeled glycans with copper-free click chemistry.

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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.