The origins of shelter dogs can be obscure, and Gemma Tarlach at Discover writes that her three dogs are no different. One looks like an American Bulldog and another like a Labrador, while her third acts like a hound, with a predilection for treeing squirrels and baying, though all have pit bull-like characteristics.

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Cancer researcher Alan Rabson has died at 92, the New York Times reports.

As the National Guideline Clearinghouse goes dark, the ECRI Institute says it will pick up the slack.

In Genome Research this week: sequencing method examines proteins parasite uses to evade immune system, L1 insertions in cancer, and more.

The Atlantic reports on private Facebook support groups for people who receive unexpected parentage results from direct-to-consumer genetic tests.