Emory University scientists have developed mammalian cells that produce magnetic nanoparticles to aid medical researchers in tracking cells, reports MIT's Tech Review. The scientists took a gene from pond bacteria that use small magnetic particles as a sort of compass and inserted it into mouse cells which then produced their own magnetic nanoparticles. When those mouse cells were inserted into a live mouse's brain, the cells could easily be seen on an MRI.

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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.