This Week in PLOS

A study by researchers from Sweden, the US, and elsewhere in PLOS Genetics looks at obesity in light of both genetic and physical activity contributors. Using self-reported physical activity data for 111,421 individuals of European ancestry whose genotype at a dozen obesity-related risk loci had been directly assessed or imputed, the group did a gene-by-activity analysis aimed at understanding whether high levels of activity can dial back genetic obesity risk.

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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.