Researchers trying to pin down how frequently mutations crop up in humans have come up with different estimates, writes Ewen Callaway at Nature News. He adds that these estimates also seem to indicate that the rate is variable and has slowed.

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US News & World Report writes that genetic testing of lung tumors can help identify treatments for patients.

A team of researchers plans to sample Loch Ness for environmental DNA, according to Newsweek.

The New York Times writes about the appearance of mosaicism in healthy people.

In PNAS this week: insecticide resistance patterns Anopheles gambiae mosquito, transcriptome patterns in Pseudomonas aeruginosa during infection, and more.