Researchers have teased out ancient DNA from the animal skin-based parchment on which medieval scribes wrote records, New Scientist reports.

"We realized all these dead cows have a date written on them," Matthew Collins from the University of Copenhagen tells New Scientist. "We thought, 'This is crazy, why aren't we exploiting this?'"

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The Atlantic reports that genetic counselors are coping with an influx of patients seeking advice on their direct-to-consumer genetic test results.

A small study finds differences between three genomic prostate cancer tests, Medscape reports.

In Nature this week: shared genetic architecture for asthma and allergic diseases, and more.

A survey of Canadians finds them to be divided on genetically modified food, the Ottawa Citizen reports.