Are 3D printers the new lab must-have?

Russell Neches, a graduate student in Jonathan Eisen's lab at University of California, Davis, thinks so.

In a post on his blog, Neches recounts a recent lab equipment order that included a handful of gel electrophoresis combs at a price of $51 apiece.

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Senator Elizabeth Warren (D-Mass.) has released the results of a genetic ancestry analysis, the Boston Globe reports.

Retraction Watch's Ivan Oransky and Adam Marcus report that Harvard Medical School and Brigham and Women's Hospital have recommended that more than 30 papers from a former researcher be retracted.

Thomas Steitz, who won the 2009 chemistry Nobel Prize for his ribosome work, has died, the Washington Post reports.

In PLOS this week: mechanisms for genes implicated in coronary artery disease, rumen microbes and host genetics influence cow methane production, and more.