Researchers at the Dana-Farber Cancer Institute may have the best news for couch potatoes since the invention of the Thighmaster — a newly identified hormone that changes white fat cells into brown fat cells, reports Technology Review's Karen Weintraub. The naturally occurring hormone "acts like exercise on muscle tissue," Weintraub says, by burning calories and improving the body's ability to process insulin.

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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.