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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Gene drives might run into biological resistance, the Economist reports.

Forensic experts exhumed painter Salvador Dalí's body to collect DNA for a paternity test, CBS News reports.

Yale Environment 360 writes that synthetic and conservation biologists aren't always on the same wavelength, but they are trying to reach an understanding.

In Science this week: full CRISPR locus integration complex structure, and more.