According to Odyssey at Pondering Blather, Darwin's theory of evolution applies to research labs. "Labs are, and always have been, under selective pressure. They evolve. Or go extinct," he says. But to overcome the pressures that threaten research labs — a lack of tenure-track positions and low funding levels — Odyssey says that investigators ought to focus on the traits that'll increase their fitness "in this rapidly changing landscape ...

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US Attorney General Jeff Sessions is considering using DNA tests to determine relatedness between adult and child migrants, the Daily Caller reports.

Bloomberg reports that Brainstorm Cell Therapeutics plans to offer a treatment it is developing under the "right to try" law for hundreds of thousands of dollars.

In Nature this week: expansion of disease-resistance genes among long-lived oak trees, and more.

In a proof-of-concept study, researchers report being able to determine age from dried bloodstains, Discover's D-brief blog reports.