This post has been updated to correct the spelling of Erika Check Hayden's given name.

The Archon Genomics X Prize was created to be the sort of challenge that inspires a gaggle of investigators and inventors to push new technologies and bold ideas to their limits, so why are there only two contestants in the game just two days before the registration deadline, Erika Check Hayden asks in Nature.

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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.