Evolution of a Killer

A new study in mBio, a journal published by the American Society for Microbiology, describes the origins of methicillin-resistant Staphylococcus aureus, reports Popular Science's Rebecca Boyle. It started as a bug in humans, but not as a drug-resistant superbug, Boyle says. That came later, when the bug made the jump to pigs.

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Researchers hope to tease out the signature effects that different carcinogens leave on the genome to determine their contributions to disease, Mosaic reports.

The Wall Street Journal looks into the cost of new gene therapies.

An Imperial College London-led team reports that it was able to use a gene drive to control a population of lab mosquitos.

In PNAS this week: genomic effects of silver fox domestication, limited effect of mitochondrial mutations on aging in fruit flies, and more.