This Week in PNAS

This week, PNAS reports on a new method to study small molecule metabolites in C. elegans, especially how they might interact synergistically. Using a NMR-spectroscopic method, differential analysis by 2D NMR spectroscopy (DANS), they were able to compare wild-type C. elegans and a mutant lacking pheromone signaling genes to identify both known and unknown ascarosides – in variable concentrations, these molecules can be both sex pheromones and developmental regulators.

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A phylogenetic analysis indicates two venomous Australian spiders are more closely related than thought, the International Business Times reports.

Technology Review reports that 2017 was the year of consumer genetic testing and that it could spur new analysis companies.

In Science this week: CRISPR-based approach for recording cellular events, and more.

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